In-wall loudspeaker

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

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D14213

Patent

active

D03065928

REFERENCES:
patent: D253592 (1979-12-01), Takei
patent: D268673 (1983-04-01), Iijima
patent: D271967 (1983-12-01), Meyer et al.
Stereo Review, Jul. 1987, p. 11, top left-Koss Loudspeaker.
Stereo Review, Dec. 1986, p. 38, top right-BSR Colossus Loudspeaker System.

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