СПИСОК патентов США - подгруппа МПК16 H04M11/02
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| № п/п | Номер патента | Название патента | |||
2017 | |||||
| 1 | 9584775 | Wireless entrance communication device | |||
| 2 | 9571661 | Controller for a door entry system | |||
| 3 | 9565284 | Systems and methods for automatically connecting a user of a hands-free intercommunication system | |||
| 4 | 9560502 | Methods of performing actions in a cell phone based on message parameters | |||
2016 | |||||
| 5 | 9516284 | Communication and monitoring system | |||
| 6 | 9514618 | Signaling system, signaling method, and server | |||
| 7 | 9508091 | Interactive property communication system | |||
| 8 | 9503983 | Wireless communication system, and wireless communication method in wireless communication system | |||
| 9 | 9497331 | Apparatus and methods for remote control of access to facilities | |||
| 10 | 9485478 | Communication and monitoring system | |||
| 11 | 9432638 | Communication and monitoring system | |||
| 12 | 9425981 | Remote access control to residential or office buildings | |||
| 13 | 9414030 | Communication and monitoring system | |||
| 14 | 9398166 | Method and device of communicating paging area information | |||
| 15 | 9363387 | System and method for caller identification voice announce | |||
| 16 | 9338627 | Portable device for indicating emergency events | |||
| 17 | 9313325 | Telephone transmission system, telephone transmission server and display unit | |||
| 18 | 9307333 | Networked sound masking system | |||
| 19 | 9288444 | System and method for video signal delivery | |||
| 20 | 9247219 | Doorbell communication systems and methods | |||
| 21 | 9230376 | Image forming apparatus, image forming system, and computer program product | |||
2015 | |||||
| 22 | 9215410 | Two-wire multichannel video door system | |||
| 23 | 9179109 | Doorbell communication systems and methods | |||
| 24 | 9173080 | Method and related communication device for transmission and reception of natural disaster warning notification message in a wireless communication system | |||
| 25 | 9172921 | Doorbell antenna | |||
| 26 | 9167401 | Wireless messaging and content provision systems and methods | |||
| 27 | 9165444 | Light socket cameras | |||
| 28 | 9160987 | Doorbell chime systems and methods | |||
| 29 | 9143233 | Intercom transceiver with fiber optic link | |||
| 30 | 9142214 | Light socket cameras | |||
| 31 | 9131068 | Systems and methods for automatically connecting a user of a hands-free intercommunication system | |||
| 32 | 9094584 | Doorbell communication systems and methods | |||
| 33 | 9092195 | Glass touch screen protector | |||
| 34 | 9071953 | Systems and methods providing advertisements to a cell phone based on location and external temperature | |||
| 35 | 9065930 | Method and system for presence detection in a communication system | |||
| 36 | 9060074 | Method and system for communication | |||
| 37 | 9058738 | Doorbell communication systems and methods | |||
2014 | |||||
| 38 | 8886393 | Vehicle telematics communication for providing in-vehicle reminders | |||
| 39 | 8768293 | Automatically establishing a telephonic connection between devices | |||
| 40 | 8744397 | System for providing profile information | |||
2012 | |||||
| 41 | 8311509 | Detection, communication and control in multimode cellular, TDMA, GSM, spread spectrum, CDMA, OFDM WiLAN and WiFi systems | |||
2011 | |||||
| 42 | 7937066 | Emergency conference calling system | |||
| 43 | 7912226 | Automatic measurement of audio presence and level by direct processing of an MPEG data stream | |||
| 44 | 7899491 | Cross-correlated quadrature modulated spread spectrum, OFDM and position finder system | |||
2009 | |||||
| 45 | 7539293 | Telephone controlled entertainment | |||
| 46 | 7529352 | System and method to provide local service for all emergency services numbers and to provide language assistance for calls to such numbers | |||
2008 | |||||
| 47 | 7466975 | GPS and non GPS position finder, emergency, MIMO, spread spectrum, CDMA, GSM and OFDM | |||
2006 | |||||
| 48 | 7130395 | Method and system for reducing cross-talk and avoiding bridged taps | |||
2005 | |||||
| 49 | 6958706 | Patient care and communication system | |||
| 50 | 6879670 | Collective housing intercom apparatus | |||
2004 | |||||
| 51 | 6774765 | System and method of dispatching an individual in a transaction establishment | |||
| 52 | 6748061 | Access control system having a programmable automatic notification feature | |||
| 53 | 6728351 | Access control system having tenant codes that may be selectively displayed | |||
| 54 | 6697467 | Telephone controlled entertainment | |||
2003 | |||||
| 55 | 6606376 | Method for entrance telephone communication utilizing public subcriber telephone networks | |||
| 56 | 6606260 | Switch mode power supply for a telephone entry system or the like | |||
| 57 | 6553238 | Apparatus and method for the remote diagnosis, remote monitoring and remote initialization of automatic doors, door systems and garage doors | |||
| 58 | 6545589 | Method and apparatus for managing telecommunications | |||
2002 | |||||
| 59 | 6498836 | Data communication apparatus | |||
| 60 | 6486867 | Telecommunication terminal and device for projecting received information | |||
| 61 | 6459362 | Person paging method | |||
| 62 | 6453164 | Intelligent telephone control system which allows subscribers to remotely control a plurality of call handling utilities | |||
| 63 | 6424707 | Point-to-point-to-point calling | |||
| 64 | 6411804 | Wireless terminal device | |||
| 65 | 6386882 | Remote delivery of software-based training for implantable medical device systems | |||
| 66 | 6377668 | Internet priority call device | |||
| 67 | 6343115 | Method of announcing an internet call | |||
2001 | |||||
| 68 | 6332082 | Personal communicator telephone system | |||
| 69 | 6265842 | Cross-connect method and apparatus | |||
| 70 | 6263055 | System for suppressed ringing access of subscriber lines to identify usage anomalies of customer premise equipment connected thereto | |||
| 71 | 6259355 | Patient care and communication system | |||
| 72 | 6256479 | Wireless door intercom | |||
| 73 | 6253071 | Method and apparatus for a cross-connect system with automatic facility information transference to a remote location | |||
| 74 | 6236716 | Call parking and paging system and method of operation | |||
| 75 | 6233328 | Door intercom | |||
| 76 | 6208727 | Method of alerting apartment residents to the arrival of visitors | |||
| 77 | 6201950 | Computer-controlled paging and telephone communication system and method | |||
| 78 | 6188907 | Enhanced telephone communication methods and apparatus incorporating pager features | |||
| 79 | 6188751 | Call processing system with call screening | |||
| 80 | 6185294 | Method and apparatus for installing telephone intercom-voice messaging apparatus at doorbell for dwelling | |||
| 81 | 6185283 | Telephone system providing personalized telephone features | |||
2000 | |||||
| 82 | 6167128 | Method and apparatus for controlling a telephone system | |||
| 83 | 6160881 | System and method for integrating electronic entry systems with telecommunication systems | |||
| 84 | 6134454 | System and method for maintaining personal communications information in a mobile communications system | |||
| 85 | 6122484 | Method and apparatus for processing telephone calls | |||
| 86 | 6104912 | Meet-me telephone system with subscriber notification feature | |||
| 87 | 6072402 | Secure entry system with radio communications | |||
| 88 | 6067443 | Communicator for a telephone system | |||
| 89 | 6061570 | Unified message announcing | |||
| 90 | 6049598 | Facility for tying a door intercommunication system with a video camera to an integrated services digital network | |||
| 91 | 6049272 | Automated data transmission link to law enforcement and security personnel | |||
| 92 | 6029154 | Method and system for detecting fraud in a credit card transaction over the internet | |||
| 93 | 6026153 | Personal communicator telephone system | |||
| 94 | 6026149 | Method and apparatus for managing telecommunications | |||
| 95 | 6021190 | Method and apparatus for receiving and processing an incoming call | |||
1999 | |||||
| 96 | 6009333 | Telephone communication system having a locator and a scheduling facility | |||
| 97 | 6005928 | Method and system for automatic distribution addressing | |||
| 98 | 5991397 | Voice paging service control method in a switching system | |||
| 99 | 5982861 | Electronic directory and entry control system | |||
| 100 | 5978671 | Method for updating a caller database in a communication system | |||
| 101 | 5978654 | Alphanumeric paging entry system | |||
| 102 | 5966432 | Remote answering of doorbell | |||
| 103 | 5960064 | Call screening method and apparatus for use in completing telephone calls | |||
| 104 | 5956390 | Method and apparatus for providing verified message receipt in a messaging system | |||
| 105 | 5953638 | Method and system for affinity termination of calls | |||
| 106 | 5918179 | Communication system and method using two-way paging to provide call control | |||
| 107 | 5912958 | On-hold device | |||
| 108 | 5907600 | Product registration system | |||
| 109 | 5905787 | Method and apparatus for installing telephone intercom--voice messaging apparatus at doorbell for dwelling | |||
| 110 | 5901211 | System and method for automatically transferring calls or allowing access | |||
| 111 | 5894591 | Personal emergency response communication apparatus for pagers | |||
| 112 | 5894506 | Method and apparatus for generating and communicating messages between subscribers to an electronic messaging network | |||
| 113 | 5892817 | Wireless system for alerting individual to incoming telephone call | |||
| 114 | 5867562 | Call processing system with call screening | |||
| 115 | 5857016 | System and method for automatically delivering an incoming calling line identification to a paging system | |||
1998 | |||||
| 116 | 5842123 | Radio paging system with voice transfer function and radio pager | |||
| 117 | 5842112 | Personal communicator system for identifying a telephone which is disposed proximate a locator transmitter | |||
| 118 | 5841837 | Method and apparatus for processing telephone calls | |||
| 119 | 5838779 | Adjunct controller for a telephone system | |||
| 120 | 5828313 | Radio paging receiver for displaying a call message which includes illustration | |||
| 121 | 5825867 | Enhanced call waiting | |||
| 122 | 5822544 | Patient care and communication system | |||
| 123 | 5822418 | Telephone communication system having a locator | |||
| 124 | 5819172 | Electronic mail system with RF communications to mobile radios | |||
| 125 | 5815557 | Homeowner key for an electronic real estate lockbox system | |||
| 126 | 5812934 | Method and apparatus for a cross-connect system with automatic facility information transference to a remote location | |||
| 127 | 5809425 | Gateway for low cost alphanumeric paging entry system | |||
| 128 | 5805991 | Technique for eliminating free paging in a personal mobile communication system | |||
| 129 | 5802147 | System and method for notifying a user of awaiting messages | |||
| 130 | 5797097 | Method and apparatus for identifying the location of a roaming pager | |||
| 131 | 5790949 | Paging device with ability to automatically connect by telephone a person initiating a page request to the person paged | |||
| 132 | 5784446 | Method and apparatus for installing telephone intercom-voice messaging apparatus at doorbell for dwelling | |||
| 133 | 5764747 | Personal number communication system | |||
| 134 | 5761278 | Integrated data collection and transmission for 9-1-1 calls for service | |||
| 135 | 5754637 | Collective house interphone system and method therefore | |||
| 136 | 5751935 | Radio paging system | |||
| 137 | 5751760 | Controller for a telephone system with code screening of incoming calls | |||
| 138 | 5748722 | Collective-house control system employing an interface circuit for alternative mark inversion control communication | |||
| 139 | 5745689 | System and method for providing pager services to users of a computer network | |||
| 140 | 5742763 | Universal message delivery system for handles identifying network presences | |||
| 141 | 5706329 | Personal mobile communication system having meet-me bridge reconnect feature | |||
| 142 | 5705991 | Access control device featuring key ordering or key simultaneity | |||
1997 | |||||
| 143 | 5699053 | Person paging method | |||
| 144 | 5694453 | Method and apparatus for processing telephone calls and delivering information about the calls to a pager | |||
| 145 | 5692038 | Method for identifying the source of a telephonic communication | |||
| 146 | 5689229 | Patient care and communication system | |||
| 147 | 5684859 | Method and apparatus for downloading location specific information to selective call receivers | |||
| 148 | 5673299 | Adjunct controller for a telephone system | |||
| 149 | 5673016 | Multifunction visitor information system | |||
| 150 | 5666428 | Audio distribution system | |||
| 151 | 5663715 | Synchronized paging system | |||
| 152 | 5657380 | Interactive door answering and messaging device with speech synthesis | |||
| 153 | 5649003 | Method in a communications systems for providing an out-of-band signaling response based on predetermined conditions | |||
| 154 | 5638450 | Method and apparatus for establishing two way communications between a pager device and a paging service provider | |||
| 155 | 5635914 | Method and apparatus for dynamic group calling in a selective call system | |||
| 156 | 5631946 | System for transferring information from a RF receiver to a processor under control of a program stored by the processor and method of operation thereof | |||
| 157 | 5625670 | Electronic mail system with RF communications to mobile processors | |||
| 158 | 5610970 | Telephone system with scheduled handling of calls | |||
| 159 | 5594786 | Patient care and communication system | |||
1996 | |||||
| 160 | 5588037 | Remote access telephone control system | |||
| 161 | 5588009 | Personal paging, communications, and locating system | |||
| 162 | 5577040 | Telecommunications terminal particularly for electronic mass mail and message distribution network | |||
| 163 | 5568542 | Building short circuit react system | |||
| 164 | 5561848 | Two way paging system with answer-back function | |||
| 165 | 5561703 | System and method for integration of a paging server into a private branch exchange environment | |||
| 166 | 5555553 | Method for supporting communication in a communication system using intermediaries between called parties | |||
| 167 | 5555297 | Automatic call distributor reporting system and method therefor | |||
| 168 | 5546442 | Method and apparatus for use in completing telephone calls | |||
| 169 | 5526398 | Method of operating a combination radiotelephone and paging device | |||
| 170 | 5524049 | Personal-servicing communication system | |||
| 171 | 5515426 | Telephone communication system having a locator | |||
| 172 | 5513243 | Person location system | |||
| 173 | 5513241 | Low cost acknowledge-back system for a pager using existing infrastructure | |||
| 174 | 5509059 | Method for the establishment in a communication system of a connection between a communication terminal apparatus and a plurality of further apparatus | |||
| 175 | 5506896 | Intercommunication system | |||
| 176 | 5502761 | Apparatus and method for relaying calling information to a pager or alternate telephone | |||
| 177 | 5491739 | Methods of establishing a two-way call in a radio communication system | |||
| 178 | 5485503 | Method of remote launching applications in a message delivery system | |||
| 179 | 5481590 | Selection of a communication terminal for receiving an incoming call | |||
1995 | |||||
| 180 | 5479472 | System for interconnecting electronic mail systems by RF communications and method of operation thereof | |||
| 181 | 5475375 | Electronic access control systems | |||
| 182 | 5467386 | Method for signalling/communication within an entrance telephone system and an entrance telephone system communicating according to the method | |||
| 183 | 5465082 | Apparatus for automating routine communication in a facility | |||
| 184 | 5459773 | Automatic pager calling device | |||
| 185 | 5440644 | Audio distribution system having programmable zoning features | |||
| 186 | 5440625 | Personal-servicing communication system | |||
| 187 | 5438611 | Electronic mail system with RF communications to mobile processors originating from outside of the electronic mail system and method of operation thereof | |||
| 188 | 5436960 | Electronic mail system with RF communications to mobile processors and method of operation thereof | |||
| 189 | 5432839 | Method and apparatus for forwarding selective call messages received in a first selective call service to a second selective call service | |||
| 190 | 5432616 | Data communication apparatus for notification of the receipt of a call waiting signal | |||
| 191 | 5428663 | Incoming communications forwarding technique utilizing a called party location indicator | |||
| 192 | 5418835 | Method of delivering paging messages using voice mail | |||
| 193 | 5416473 | Calendar driven selective call messaging system and operating method | |||
| 194 | 5412719 | Radio paging system with voice transfer function and radio pager | |||
| 195 | 5404582 | Aural annunciator circuit for a receiver | |||
| 196 | 5402467 | Portable paging telephone system with improved response signal verification mode | |||
| 197 | 5398280 | Paging system for remote computers | |||
| 198 | 5396537 | Reliable message delivery system | |||
| 199 | 5384838 | System for communicating through partitions | |||
1994 | |||||
| 200 | 5375162 | Method of making call connection in a private branch exchange system with paging system | |||
| 201 | 5375161 | Telephone control system with branch routing | |||
| 202 | 5363434 | Audio distribution system | |||
| 203 | 5363425 | Method and apparatus for providing a personal locator, access control and asset tracking service using an in-building telephone network | |||
| 204 | 5357561 | Communication unit control for wide area communication systems | |||
| 205 | 5335262 | Radio communication adapter connected to mobile station and mobile communication system using the radio communication adapter | |||
| 206 | 5321742 | Entry door answering telephone system | |||
| 207 | 5315644 | Telephone interface circuit | |||
| 208 | 5315635 | Reliable message communication system | |||
| 209 | 5315634 | Automatic trading method and apparatus | |||
| 210 | 5311570 | Integration of wireless paging in a communication system | |||
| 211 | 5305372 | Mobile unit with speed dialing feature for cellular telephone network | |||
| 212 | 5304991 | Selective call radio paging receiver having display function and reduced control inputs | |||
| 213 | 5303300 | Security door phone device | |||
| 214 | 5301225 | Method and system for dynamically regulating a power saving period within a radio telecommunication system | |||
| 215 | 5293418 | Mobile terminal equipment capable of storing called state | |||
| 216 | 5291399 | Method and apparatus for accessing a portable personal database as for a hospital environment | |||
| 217 | 5289534 | Door ajar signalling device | |||
| 218 | 5289524 | Data transmission method and unit | |||
| 219 | 5285493 | Radio tele-communication device with received message displaying feature | |||
| 220 | 5282239 | Cordless telephone system for moving conveyances | |||
| 221 | 5280521 | Portable telephone system | |||
| 222 | 5280266 | Visitor sensing device | |||
1993 | |||||
| 223 | 5260986 | Group notification service and system | |||
| 224 | 5237602 | Remotely-activated telephone system for communication with the disabled | |||
| 225 | 5228078 | Two-wire intercom with hands-free function | |||
| 226 | 5222123 | Registration and automatic call redirecting for cordless telephone systems | |||
| 227 | 5218629 | Communication system for message display onboard mass transit vehicles | |||
| 228 | 5210786 | Portable telephone system using stratified exchange system | |||
| 229 | 5208849 | Method of and apparatus for private telephone automatic locating and answering | |||
| 230 | 5202912 | Method and apparatus for providing telepoint to telepoint calling between pager equipped handsets | |||
| 231 | 5198644 | System for display of prices and related method | |||
1992 | |||||
| 232 | 5166973 | Radio paging system with local local loop | |||
| 233 | 5159624 | Communication system for transmitting to a portable receiver data indicative of received image or voice signals | |||
| 234 | 5157660 | Communication system including portable terminals and fixed terminals | |||
| 235 | 5153906 | Personal-servicing communication system | |||
| 236 | 5151930 | Method for personal paging a telephone private branch exchange with the assistance of a personal paging device that offers mutually different operating modes for personal paging | |||
| 237 | 5151929 | Computer-controlled radio-paging and telephone communication using recorded voice messages | |||
| 238 | 5148469 | Direct pager access with full number dialing | |||
| 239 | 5148468 | Door answering system | |||
| 240 | 5140626 | Paging system for establishing telephone connection between calling party and paged party | |||
| 241 | 5132681 | Intelligent switch system | |||
| 242 | 5131048 | Audio distribution system | |||
| 243 | 5128981 | Radio communication system and a portable wireless terminal | |||
| 244 | 5128980 | Automatic paging telephone set and method for controlling thereof | |||
| 245 | 5127050 | Information processing apparatus separably combined with telephone unit | |||
| 246 | 5113427 | Radio-signal-responsive vehicle device control system | |||
| 247 | 5111197 | Apparatus for allocating subscriber identification numbers to plural service zones in a paging system | |||
1991 | |||||
| 248 | 5077787 | Data communication apparatus | |||
| 249 | 5046083 | Entrance communication system | |||
| 250 | 5033080 | Method and apparatus for identifying the source of page communication in a party-line intercom paging system | |||
| 251 | 5032820 | Two-wire television interphone system | |||
| 252 | 4987589 | Entrance telephone system utilizing the public subscriber telephone network | |||
| 253 | 4987588 | Data transmission processing machine | |||
1990 | |||||
| 254 | 4967195 | Hospital signaling and communications system | |||
| 255 | 4961217 | Personal-servicing communication system | |||
| 256 | 4943997 | Device for communicating a doorside intercom set with a remote telephone | |||
| 257 | 4937855 | Building security system | |||
| 258 | 4912757 | Paging system | |||
| 259 | 4899378 | Telephone announcement system | |||
1989 | |||||
| 260 | 4885795 | Hospital digital data transfer system | |||
| 261 | 4885766 | Remote control device using a telephone line | |||
| 262 | 4885577 | Paging system for providing a data message and a voice message to a unique address of a paging receiver | |||
| 263 | 4878240 | Multi-service telephone switching system | |||
| 264 | 4825456 | Telephone system/paging system interface | |||
| 265 | 4821308 | Telephone answering system with paging function | |||
| 266 | 4811376 | Paging system using LPC speech encoding with an adaptive bit rate | |||
| 267 | 4809320 | Door security system | |||
| 268 | 4802209 | Paging system for electronic telephone apparatus | |||
| 269 | 4797914 | Telephone display | |||
1988 | |||||
| 270 | 4764953 | Method and apparatus for remote doorbell answering | |||
| 271 | 4759056 | Personal-servicing communication system | |||
| 272 | 4754476 | Premises page/intercom system utilizing telephone set component | |||
| 273 | 4752951 | Method of providing location dependent person locator service | |||
| 274 | 4748655 | Portable telephones | |||
| 275 | 4741020 | Clerk paging system | |||
| 276 | 4740788 | Method of providing location dependent visitor dispatching service | |||
| 277 | 4731821 | Single wire telephone intercommunication system | |||
| 278 | 4720849 | Information display apparatus | |||
1987 | |||||
| 279 | 4715060 | Door message apparatus with telephone answering device | |||
| 280 | 4701943 | Paging system using LPC speech encoding with an adaptive bit rate | |||
| 281 | 4680785 | Personal-signaling communication system | |||
| 282 | 4661972 | Mobile telephone system for automatically paging absent mobile subscriber | |||
| 283 | 4658095 | Building intercom system | |||
| 284 | 4649385 | Electronic locating system for persons receiving telephone calls | |||
| 285 | 4644104 | Security system including a plurality of centrally programmable locking assemblies | |||
| 286 | 4642425 | Telephone paging system and method | |||
1985 | |||||
| 287 | 4558316 | Electrical supervisory control and data acquisition system | |||
| 288 | 4535441 | Communication system for stationary and mobile subscribers | |||
| 289 | 4524384 | Video and audio security system | |||
1984 | |||||
| 290 | 4490579 | Auto-dialing pager receiver | |||
| 291 | 4480153 | Musical-output adapter for telephones | |||
| 292 | 4477807 | Radio pager with display device | |||
1983 | |||||
| 293 | 4408099 | Radio paging system capable of accepting message with access of paging receiver | |||
| 294 | 4370675 | Doorbell actuated television security system | |||
1982 | |||||
| 295 | 4355329 | Remote station | |||
| 296 | 4313035 | Method of providing person locator service | |||
1981 | |||||
| 297 | 4249206 | Audio and visual intercommunication and surveillance system | |||
1980 | |||||
| 298 | 4237344 | Rapid response health care communications system | |||
| 299 | 4232196 | Video telephone apparatus | |||
1979 | |||||
| 300 | 4175216 | Intercom calling apparatus in a key telephone system | |||
| 301 | 4172967 | Automatic answering device for use in live speech communication and circuit components thereof | |||
| 302 | 4167732 | Multi-apartment building combination communication and security circuit | |||
| 303 | 4144415 | Key telephone system paging lockout circuit | |||
1978 | |||||
| 304 | 4113986 | Telephone controlled lock release arrangement | |||
| 305 | 4113985 | Mine dial and page phone system | |||
| 306 | 4107473 | Two-way paging system transmission direction sensing and control apparatus and method | |||
| 307 | 4107466 | Individual room energy control system | |||
| 308 | 4097694 | Time-division telephone system embodying trunks having demodulating-adder circuits | |||
| 309 | 4075659 | Electronic door announcer | |||
| 310 | 4075426 | Parallel silent communicator | |||
| 311 | 4072824 | Automatic dialer for paging system or the like | |||
1977 | |||||
| 312 | 4065642 | Message signaling and alerting system and method thereof | |||
| 313 | 4037059 | Intercom system for a key telephone system | |||
| 314 | 4031329 | Time limited telephone paging employs a relay switch actuated by dual frequency tone | |||
| 315 | 4031322 | Telephone operated signalling system | |||
| 316 | 4013844 | Line circuit for a universal key/internal telephone system | |||
1976 | |||||
| 317 | 3999006 | Visitor confirmation system | |||
| 318 | 3995121 | Telephone interconnected paging system with dial click to pulse converter | |||
| 319 | 3987247 | Data signalling unit for telephone systems | |||
| 320 | 3985976 | Audio frequency signalling systems for telephone systems | |||
| 321 | 3978468 | Intercom call signaling mechanism | |||
| 322 | 3947641 | Use of public subscriber telephone network; method and apparatus | |||
| © 2017, ПАТ-Инфо, В.И. Карнышев
Дата формирования списка: 03.04.2017 | |||||