Speaker

Details Speaker Speaker

1990-12-17

1992-10-20

Rademaker, Charles A.

Recording, communication, or information retrieval equipment

Video or audio transmission, recording or playback equipment

Speaker or housing therefor

Patent

active

D03303764

REFERENCES:
patent: D289040 (1987-03-01), Olsen
patent: D306168 (1990-02-01), Caputo
patent: 4033430 (1977-07-01), Bolden
patent: 4122910 (1978-10-01), Weaner

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