Radio receiver of headphone type

Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Radio receiver – tuner or amplifier – or housing therefor

Patent

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Details

D14198, D14223

Patent

active

D03400336

REFERENCES:
patent: D237307 (1975-10-01), Miyamoto et al.
patent: D316861 (1991-05-01), Yoda et al.
patent: D321879 (1991-11-01), Emmerling
Radio Shack 1990 Cat. No. 446; .COPYRGT.1989; p. 95; headset radio No. 1.
Hong Kong Enterprise; Jul. 1988; p. 78; headset radio 121.
Popular Science; Aug. 1988; p. 87; headphone radio.
Home Furnishings Daily; Sep. 19, 1987; p. 111; headset radio (upper left).

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