Microphone

Details Microphone Microphone

1988-03-10

1990-07-17

Shooman, Theodore M.

Recording, communication, or information retrieval equipment

Video or audio transmission, recording or playback equipment

Element or attachment

D14227

Patent

active

D03093050

REFERENCES:
patent: D196515 (1963-10-01), Flygstad et al.
patent: 2889401 (1959-06-01), Finkbeiner
patent: 3868572 (1975-02-01), Kaufman et al.
patent: 4020297 (1977-04-01), Brodie
patent: 4273969 (1981-06-01), Foley et al.
patent: 4289938 (1981-09-01), Zichy

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