Amplified subwoofer tube speaker

Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Speaker or housing therefor

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Details

D14215, D14188, 1401

Patent

active

D03926400

REFERENCES:
patent: D338672 (1993-08-01), Watanabe et al.
patent: D385746 (1997-11-01), Wu
patent: 4756382 (1988-07-01), Hudson, III
patent: 5191177 (1993-03-01), Chi
Bazooka Bass Tubes catalog, p. 3, speaker systems, Oct. 1993.

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