СПИСОК патентов США - подгруппа МПК16 H04R27/04
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| № п/п | Номер патента | Название патента | |||
2017 | |||||
| 1 | 9560459 | Modular voice amplification system for protective mask | |||
2016 | |||||
| 2 | 9467770 | Handset or headset | |||
| 3 | 9277338 | Audio control system and electronic device using same | |||
2015 | |||||
| 4 | 9014389 | Megaphone | |||
2014 | |||||
| 5 | 8660273 | Interface circuit and electronic device using the same | |||
2013 | |||||
| 6 | 8611190 | Bio-acoustic wave energy transducer | |||
2012 | |||||
| 7 | 8155339 | Air-droppable loudspeaker | |||
2011 | |||||
| 8 | 7912234 | Acoustic projector for propagating a low dispersion sound field | |||
2008 | |||||
| 9 | 7394905 | Voice amplifier for mask | |||
2005 | |||||
| 10 | 6947566 | Method and apparatus for a portable public address system | |||
1997 | |||||
| 11 | 5640459 | Portable voice amplifier | |||
1995 | |||||
| 12 | 5383079 | Portable information reproducing and voice amplifying apparatus | |||
1994 | |||||
| 13 | 5349480 | Portable audio apparatus | |||
| 14 | 5303109 | Portable information reproducing and voice amplifying apparatus | |||
1993 | |||||
| 15 | 5225944 | Portable audio apparatus | |||
| 16 | 5208717 | Portable information reproducing and voice amplifying apparatus | |||
1992 | |||||
| 17 | 5115470 | Sound reinforcement system | |||
1990 | |||||
| 18 | 4896360 | Public address amplifier | |||
1989 | |||||
| 19 | 4815559 | Portable loudspeaker apparatus for use in live performances | |||
1985 | |||||
| 20 | 4491699 | Communication apparatus for hostile environments | |||
1983 | |||||
| 21 | 4400591 | Simulated space helmet | |||
1981 | |||||
| 22 | 4296664 | Sound broadcasting apparatus | |||
1980 | |||||
| 23 | 4237341 | Portable self-contained amplifier and loudspeaker apparatus | |||
1979 | |||||
| 24 | 4166926 | Portable lectern and voice amplifier | |||
1978 | |||||
| 25 | 4114973 | Power supply for transportable devices | |||
| 26 | 4095261 | Audio tape recorder, editor and amplifying system | |||
| 27 | 4090033 | Miniature portable public address system | |||
| 28 | 4076957 | Portable sound device for public address | |||
1977 | |||||
| 29 | 4052561 | Lectern with detent-hinged shelf for portable sound system | |||
| © 2017, ПАТ-Инфо, В.И. Карнышев
Дата формирования списка: 03.04.2017 | |||||