Loudspeaker

Recording – communication – or information retrieval equipment – Computer – data processor equipment

Patent

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D1401

Patent

active

D02472368

REFERENCES:
patent: D226386 (1973-02-01), Sandler
patent: D230994 (1974-03-01), Iida
patent: D237804 (1975-11-01), Kizawa
patent: 3500953 (1970-03-01), Lahti
patent: 3716671 (1973-02-01), Karr
Lafayette Electronics Cat. No. 750, .COPYRGT. 1974, p. 71, Speaker, Item No. 3.

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