Headphone

Details Headphone Headphone

1985-03-04

1987-09-01

Ansher, Bernard

Recording, communication, or information retrieval equipment

Computer, data processor equipment

Patent

active

D02916908

REFERENCES:
patent: D228352 (1973-09-01), Itagaki
patent: D244300 (1977-05-01), Besasie
patent: D247433 (1978-03-01), Fixler
patent: D270634 (1983-09-01), Ungar
patent: D286632 (1986-11-01), Teunis
patent: 3430261 (1969-03-01), Benner
patent: 3488457 (1970-01-01), Lahti
patent: 3810525 (1974-05-01), Crenna
patent: 3891810 (1975-06-01), Hayashi
Best Products, 1984/1985 Catalog, p. 294H, Item 11 Sony Stereo Headphone Model MDR-A50LV.

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