Speaker

Details Speaker Speaker

1990-12-17

1992-10-06

Rademaker, Charles A.

Recording, communication, or information retrieval equipment

Video or audio transmission, recording or playback equipment

Speaker or housing therefor

Patent

active

D03300293

REFERENCES:
patent: D227120 (1973-06-01), Schneider
patent: D230997 (1974-03-01), Shannon
patent: D278811 (1985-05-01), Waite et al.
patent: D306592 (1990-03-01), Hannsson
patent: 3945461 (1976-03-01), Robinson

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