Combined speaker and amplifier

Details Combined speaker and amplifier Combined speaker and amplifier

1990-07-31

1993-03-30

Feifer, Melvin B.

Recording, communication, or information retrieval equipment

Video or audio transmission, recording or playback equipment

Speaker or housing therefor

D14188, D14194

Patent

active

D03343863

REFERENCES:
patent: D71657 (1926-12-01), Barton et al.
patent: D229618 (1973-12-01), Teruachi et al.
patent: D241253 (1976-08-01), Bertagni et al.
patent: D318054 (1991-07-01), Kikutani
patent: D319445 (1991-08-01), Yamakawa

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