Conference telephone microphone control unit

Details Conference telephone microphone control unit Conference telephone microphone control unit

1982-03-17

1985-01-22

Corrigan, Jane E.

Recording, communication, or information retrieval equipment

Computer, data processor equipment

D14 12

Patent

active

D02772825

REFERENCES:
patent: D188663 (1960-08-01), Montague
patent: D202561 (1965-10-01), Adams
patent: D226487 (1973-03-01), Genaro et al.
patent: D263139 (1982-02-01), Petrie et al.
patent: D263466 (1982-03-01), Hiraki
patent: D269088 (1983-05-01), Genaro et al.

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