H04Q1/32

СПИСОК патентов США - подгруппа МПК¹⁶ H04Q1/32

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№ п/п	Номер патента	Название патента
2010
1	7679501	Remote interrogation of a vehicle wheel
1998
2	5822424	Dial pulse detector and detecting method for paging service for mechanical telephone subscriber
1996
3	5553116	Telephone line monitoring apparatus and method
1994
4	5347572	Telephone line monitoring apparatus and method
1992
5	5144652	Device for connecting a subscriber line to a selected internal line
1990
6	4944001	Rotary dial pulse receiver
7	4924501	Dial pulse selection
8	4920561	Ring detector for telephone line
1989
9	4868873	Pulse detector for counting dial generated pulses
10	4839920	Method for determining telephone dial pulse parameters independently of subscriber line length
1985
11	4536614	Supervision and dial pulse detection circuit for a telephone subscriber line
1984
12	4460806	Dual tone multifrequency and dial pulse receiver
13	4435620	Dial pulse delay circuit
1983
14	4375014	Current sensing trigger for a telephone system
1981
15	4300024	Technique for measuring a duration of signaling pulses in a telephone circuit
16	4255623	Apparatus for pulse train measurement
1979
17	4145576	DTMF and rotary dial signal receiver
1978
18	4087649	Pulse counting circuit
19	4071708	Dial pulse detector
20	4066846	Combined rotary dial and touch-tone telephone decoding system
1977
21	4055730	Circuit for detecting dial pulses
22	4009354	Signalling device for key telephone systems
1976
23	3941937	Dial pulse receiver
24	3935392	Dial pulse detection method and apparatus
© 2017, ПАТ-Инфо, В.И. Карнышев Дата формирования списка: 03.04.2017