СПИСОК патентов США - подгруппа МПК16 H04R21/00
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| № п/п | Номер патента | Название патента | |||
2016 | |||||
| 1 | 9497562 | Sound field control apparatus and method | |||
2012 | |||||
| 2 | 8175313 | Electronic anti-sabotage microphone grommet | |||
2011 | |||||
| 3 | 7991163 | Communication system, apparatus and method | |||
2005 | |||||
| 4 | 6856689 | Microphone holder having connector unit molded together with conductive strips | |||
2000 | |||||
| 5 | 6014448 | Fluid coupled subwoofer acoustic enclosure system | |||
1998 | |||||
| 6 | 5729508 | Environmentally sealed acoustic transducer coupling | |||
1995 | |||||
| 7 | 5450372 | Magnetoresistive microphone and acoustic sensing devices | |||
1983 | |||||
| 8 | 4387276 | Carbon transducer with electrical contact | |||
1980 | |||||
| 9 | 4220943 | Signal transducing apparatus | |||
| 10 | 4205206 | Carbon granule microphone with molded resin-conductive carbon electrode | |||
| 11 | 4182937 | Mechanically biased semiconductor strain sensitive microphone | |||
1979 | |||||
| 12 | 4142074 | Microphone | |||
1977 | |||||
| 13 | 4057688 | Intercom embodying tap transducers | |||
1976 | |||||
| 14 | 3970804 | Electro-mechanical amplifier sound transducer | |||
| 15 | 3968332 | Toy carbon microphone | |||
| 16 | 3932711 | Transmission of voice or sound through telegraphy | |||
| © 2017, ПАТ-Инфо, В.И. Карнышев
Дата формирования списка: 03.04.2017 | |||||