Microphone

Details Microphone Microphone

1996-04-17

1997-11-25

Morris, Sandra L.

Recording, communication, or information retrieval equipment

Video or audio transmission, recording or playback equipment

Element or attachment

1401

Patent

active

D03867641

REFERENCES:
patent: D356571 (1995-03-01), Garmon et al.
patent: 1675842 (1928-07-01), Aiken
patent: 3930560 (1976-01-01), Carlson et al.
patent: 3947646 (1976-03-01), Saito
patent: 4430520 (1984-02-01), Tibbetts et al.
patent: 4434329 (1984-02-01), Nasu
patent: 4453045 (1984-06-01), Bruna
patent: 4528426 (1985-07-01), Fatovic et al.
patent: 4789044 (1988-12-01), Akino
patent: 4817164 (1989-03-01), Bertignoll et al.
patent: 4867265 (1989-09-01), Wright
patent: 5226076 (1993-07-01), Baumhauer, Jr. et al.
AT&T brochure entitled "Monolith Microphone--3-D Pickup Pattern," two pages .

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