H04Q1/38

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№ п/п	Номер патента	Название патента
2016
1	9419339	Package structures including discrete antennas assembled on a device
2015
2	9179270	Intercommunication methods and devices based on digital networks
3	9019290	Information processing apparatus, information processing system, information processing method and program
2011
4	7929992	System for transmitting two-way radio communications via computer networks
2006
5	7099686	Microstrip patch antenna having high gain and wideband
1989
6	4821313	Paystation transmitter ground detect circuitry
7	4815126	Telephone line switch
8	4815124	DX circuit
9	4796290	Ground start circuit
1988
10	4731827	Interswitch line circuit
1987
11	4701950	Telephone answering system with line detector
12	4679232	Method and apparatus for providing a ground reference for telephone customer special circuits powered from a floating battery feed
1986
13	4614840	Telecommunication line circuit and associated polarity reversal circuit
14	4593156	Grounded tip detector
1985
15	4551670	Circuit for maintaining the DC voltage on an electrically isolated telecommunication line at a reference level
16	4540854	Subscriber line interface circuit
17	4535201	Ground start detection in telephone loop signalling circuit
18	4523056	Telephone including resistive array for dialing and system for using such telephone
1984
19	4476557	Duplex signaling circuit
20	4454477	Loop current detector with threshold setting impedance
21	4440979	Current sink for DPT channel unit
1982
22	4336467	Voltage detector
23	4319092	Current detection circuit arrangement for an automatic telephone exchange
1981
24	4301334	Telecommunication subscriber line access circuit with ground key and insulation fault indication
25	4292473	Loop supervision circuit
1979
26	4165450	Telephone signalling test system
1978
27	4110565	Duplex telephone signalling system
28	4101733	Electronic DX signaling circuit
29	4071879	Reversible current apparatus
1976
30	3999013	Bi-directional signaling apparatus
31	3991324	Dial pulse detector
32	3987249	System for addressed timemultiplexed telecommunication
© 2017, ПАТ-Инфо, В.И. Карнышев Дата формирования списка: 03.04.2017