Columnar loudspeaker

Details Columnar loudspeaker Columnar loudspeaker

1979-08-22

1982-08-31

Ansher, Bernard

Recording, communication, or information retrieval equipment

Computer, data processor equipment

D14 33, D1401

Patent

active

D02659905

REFERENCES:
patent: D239035 (1976-03-01), Ross
patent: D247490 (1978-03-01), Everidge
patent: D249683 (1978-09-01), Rams
patent: D258359 (1981-02-01), Iijima
patent: 3750838 (1973-08-01), Pyle, Jr.
patent: 3967065 (1976-06-01), Ward
patent: 4130174 (1978-12-01), Ostrander et al.
patent: 4214645 (1980-07-01), Plourde

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