Earphone set

Details Earphone set Earphone set

1979-08-13

1981-11-24

Ansher, Bernard

Recording, communication, or information retrieval equipment

Computer, data processor equipment

D1403

Patent

active

D02620197

REFERENCES:
patent: D244037 (1977-04-01), Warner et al.
patent: D246259 (1977-11-01), Nishimura et al.
patent: D246519 (1977-11-01), Koto
patent: D254183 (1980-02-01), Doodson
patent: D255352 (1980-06-01), Besasie
patent: 3488457 (1970-01-01), Lahti
patent: 3952158 (1976-04-01), Kyle et al.
patent: 4037064 (1977-07-01), Yasuda

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