Dual-driver speaker

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

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D03540588

REFERENCES:
patent: D169904 (1953-06-01), Hoodwin
patent: D182351 (1958-03-01), Avedon
patent: D205663 (1966-09-01), Seebinger
patent: D241553 (1976-09-01), Renkus
patent: D249941 (1978-10-01), Bremseth
patent: D264841 (1982-06-01), Pickrel
patent: D275852 (1984-10-01), Brisson
patent: D334934 (1993-04-01), Hsieh
Radio Shack, p. 42 "Super Power horn", top right.

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