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 | |||||