Powered speaker

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1993-02-12

1995-02-14

Bullock, B. J.

Recording, communication, or information retrieval equipment

Video or audio transmission, recording or playback equipment

Speaker or housing therefor

Patent

active

D03554180

REFERENCES:
patent: D162080 (1951-02-01), Plawczyk
patent: D251909 (1979-05-01), Larson
patent: D306024 (1990-02-01), Eberbach
patent: D348267 (1994-06-01), Yurkonis et al.

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