Rollbar speaker

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

Patent

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Details

D14204

Patent

active

D03722430

REFERENCES:
patent: D225865 (1973-01-01), Sjostedt et al.
patent: D227478 (1973-06-01), Ekdahl et al.
patent: D259932 (1981-07-01), Hawkins et al.
patent: D274057 (1984-05-01), Carter
patent: D281597 (1985-12-01), Matushima
patent: 4550230 (1985-10-01), Johnson
patent: 5266751 (1993-11-01), Taguchi

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