Combined headphone and microphone

Details Combined headphone and microphone Combined headphone and microphone

1991-12-31

1993-07-06

Ansher, Bernard

Recording, communication, or information retrieval equipment

Video or audio transmission, recording or playback equipment

Speaker or housing therefor

Patent

active

D03371166

REFERENCES:
patent: D299337 (1989-01-01), Wiegel
patent: D299643 (1989-01-01), Kubota
patent: D306725 (1990-03-01), Tanaka
patent: D318053 (1991-07-01), Ludeke et al.
patent: D327265 (1992-06-01), Jasey
patent: 2586644 (1952-02-01), Gilbert
patent: 4039765 (1977-08-01), Tichy et al.
patent: 4420657 (1983-12-01), Larkin
patent: 4654883 (1987-03-01), Iwata
patent: 4754484 (1988-06-01), Larkin et al.
patent: 5003589 (1991-03-01), Chen
Telephony Jan 26, 1987 p. 63 headphone, top.
Danavov brochure, Dec. 8, 1982, front cover, headset, top right.

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