Speaker unit

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

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Patent

active

D03608859

REFERENCES:
patent: D254251 (1980-02-01), Ward
patent: D311189 (1990-10-01), Lazzeroni et al.
patent: D317008 (1991-05-01), Emmetling
patent: D342522 (1993-12-01), Kurachi

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