СПИСОК патентов США - подгруппа МПК16 H04M1/80
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| № п/п | Номер патента | Название патента | |||
2016 | |||||
| 1 | 9490653 | Systems and methods for enabling a universal back-cover wireless charging solution | |||
2015 | |||||
| 2 | 9137356 | Remotely activated on-hold circuit | |||
2012 | |||||
| 3 | 8284927 | Telephone using an external media device to provide on-hold information | |||
2007 | |||||
| 4 | 7162234 | Wireless communication device | |||
2006 | |||||
| 5 | 7139391 | DAA hook switch | |||
2005 | |||||
| 6 | 6968055 | DC holding circuit | |||
| 7 | 6940968 | Telephone terminal apparatus and method | |||
| 8 | 6853725 | Method and apparatus for off-hook management of plural subscriber premises devices connected to same telephone line | |||
2004 | |||||
| 9 | 6694012 | System and method to provide control of music on hold to the hold party | |||
| 10 | 6687352 | On-hold messaging system and method | |||
2002 | |||||
| 11 | 6490346 | Apparatus and method for providing music-on-hold service in key telephone system | |||
| 12 | 6366670 | Call related information receiver unit | |||
2001 | |||||
| 13 | 6317488 | Call waiting-caller identification notification device | |||
| 14 | 6301346 | Hold-off alert system | |||
| 15 | 6272211 | On-hold messaging system and method | |||
| 16 | 6201855 | Telephone handset off switchhook and call holding alert system | |||
2000 | |||||
| 17 | 6157713 | Telephone hold circuit | |||
| 18 | 6128375 | Intelligent multifunction device for analog telephone subscriber loop interfaces | |||
1999 | |||||
| 19 | 5991398 | Telephone terminal apparatus and method | |||
| 20 | 5920616 | On-hold messaging system and method | |||
| 21 | 5870461 | On-hold messaging system and method | |||
1998 | |||||
| 22 | 5822403 | Automated telephone hold device | |||
| 23 | 5784458 | Telephone having a hold function | |||
1997 | |||||
| 24 | 5636270 | Method of producing signals commonly used with telephones | |||
1995 | |||||
| 25 | 5394465 | Parallel phone detection circuit | |||
1994 | |||||
| 26 | 5285495 | Push-button telephone dialing device with telephone hold function circuit | |||
1993 | |||||
| 27 | 5195087 | Telephone system with monitor on hold feature | |||
1992 | |||||
| 28 | 5142572 | Telephone terminal discount accessory device | |||
| 29 | 5131031 | Hold circuits for telephone systems | |||
| 30 | 5091934 | Tone modification system for telephone system with clock | |||
1991 | |||||
| 31 | 5003587 | Telephone on-hold device | |||
1990 | |||||
| 32 | 4920556 | Telephone with built-in emergency panic switch, long distance toll timer and music on hold cards | |||
| 33 | 4899381 | Single-line telephone hold circuit | |||
1989 | |||||
| 34 | 4870680 | Communication apparatus having a communication hold function | |||
| 35 | 4841566 | Hold and dial accessory for telephone instrument | |||
| 36 | 4834551 | Call holding alert system | |||
1987 | |||||
| 37 | 4674118 | Telephone line hold and hold release apparatus | |||
| 38 | 4656660 | Office line holding circuit with an automatic release function for direct connection telephone system | |||
1986 | |||||
| 39 | 4623762 | Static discharge snubber circuit for silicon controlled rectifier (SCR) type telephone hold devices | |||
1985 | |||||
| 40 | 4551582 | Circuit for automatically releasing holding state of telephone system | |||
| 41 | 4529843 | Subscribers telephone hold circuit with automatic disconnect | |||
| 42 | 4517414 | Hookswitch bounce resistant telephone hold-mute circuit | |||
1984 | |||||
| 43 | 4454385 | Latching relay hold release circuit for a telephone instrument | |||
| 44 | 4447674 | Electronic hold release circuit | |||
| 45 | 4445003 | Improved connection arrangement for connecting series and shunt utilization circuit to a communications channel | |||
| 46 | 4443665 | Privacy and hold circuit for telephone | |||
| 47 | 4440981 | Electronic hold circuit | |||
| 48 | 4435622 | Latching relay hold circuit for a telephone instrument | |||
1983 | |||||
| 49 | 4382161 | Clip-on electronic switching and hold devices for telephones | |||
1982 | |||||
| 50 | 4351987 | Telephone line circuit hold arrangement | |||
| 51 | 4337381 | Clip-on electric lock and switching device for telephone | |||
1981 | |||||
| 52 | 4258232 | Line hold circuits | |||
1979 | |||||
| 53 | 4169216 | Electronic hold and hold-release circuit for a telephone set in a multiple extension single line telephone system | |||
1977 | |||||
| 54 | 4011413 | Hold circuit for telephone | |||
| © 2017, ПАТ-Инфо, В.И. Карнышев
Дата формирования списка: 03.04.2017 | |||||