H04M1/80

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