High frequency loudspeaker

Details High frequency loudspeaker High frequency loudspeaker

1977-11-14

1980-03-18

Ansher, Bernard

Recording, communication, or information retrieval equipment

Computer, data processor equipment

D14 33, D1403

Patent

active

D02544911

REFERENCES:
patent: D173725 (1954-12-01), Frazier et al.
patent: D182351 (1958-03-01), Avedon
patent: 3941207 (1976-03-01), Croup
patent: 4031318 (1977-06-01), Pitre
patent: 4033430 (1977-07-01), Bolden

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