U.S. patent number D307,274 [Application Number 07/263,491] was granted by the patent office on 1990-04-17 for audio teleconference equipment with acoustic echo canceller. This patent grant is currently assigned to NEC Corporation. Invention is credited to Keigo Kawasaki, Kiyoshi Sasaki.
United States Patent | D307,274 |
Sasaki , et al. | April 17, 1990 |
Inventors: | Sasaki; Kiyoshi (Tokyo, JP), Kawasaki; Keigo (Tokyo, JP) |
---|---|
Assignee: | NEC Corporation (Tokyo,
JP) |
Appl. No.: | 07/263,491 |
Filed: | October 27, 1988 |
Apr 27, 1988 [JP] | 17398/1988 | |||
Current U.S. Class: | D14/243; 379/420.01; 379/440; D14/140; D14/240 |
Field of Search: | ;D14/240,140,241,242,243,142,151 ;379/440,206,202,420,432,444,441,436,388,158 |
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Brochure: Shure ST6000 Type 2, Oct., 1987. . Brochure: Bota Conference 21-L System (date of publication unknown). . Brochure: TIS Conference (date of publication unknown). . Brochure: RYKOS VIC (date of publication unknown).. |
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