Headphones

Details Headphones Headphones

1981-06-29

1983-09-20

Corrigan, Jane E.

Recording, communication, or information retrieval equipment

Computer, data processor equipment

D14 76, D1401

Patent

active

D02706342

REFERENCES:
patent: D204886 (1966-05-01), Kliewer
patent: D228352 (1973-09-01), Itagaki
Grundig Technical Information Journal (Germany), vol. 25, #5, 5-78, p. 287, "Bild 1 Kopfhorer GDH 209".
High Fidelity, 7-79, p. 101, Beyer Dt 302 Earphones.

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