Audio speaker unit

Details Audio speaker unit Audio speaker unit

1993-07-22

1994-11-15

Bullock, B. J.

Recording, communication, or information retrieval equipment

Video or audio transmission, recording or playback equipment

Speaker or housing therefor

Patent

active

D03525074

REFERENCES:
patent: D253592 (1979-12-01), Takei
patent: D271967 (1983-12-01), Meyer
patent: D277752 (1985-02-01), Nakamura
patent: D290699 (1987-07-01), Nakamura et al.
patent: D307014 (1990-04-01), Newman
patent: 4133975 (1979-01-01), Barker, III
patent: 4227050 (1980-10-01), Wilson

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