Microphone

Details Microphone Microphone

1983-11-23

1986-03-25

Corrigan, Jane E.

Recording, communication, or information retrieval equipment

Computer, data processor equipment

D14 33

Patent

active

D02831244

REFERENCES:
patent: D257346 (1980-10-01), Garrigus
patent: D276227 (1984-11-01), Nakamura
patent: 2277907 (1942-03-01), Goodale et al.

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