Speaker box with built-in amplifier

Details Speaker box with built-in amplifier Speaker box with built-in amplifier

1994-06-07

1995-07-25

Wallace, Terry A.

Recording, communication, or information retrieval equipment

Video or audio transmission, recording or playback equipment

Speaker or housing therefor

D14114

Patent

active

D03606376

REFERENCES:
patent: D237804 (1975-11-01), Kizawa
patent: D269871 (1983-07-01), Ishizaki
patent: D305333 (1990-01-01), Irby
patent: 4942939 (1990-07-01), Harrison

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