Telephone headset

Details Telephone headset Telephone headset

1991-02-26

1993-09-14

Douglas, Alan P.

Recording, communication, or information retrieval equipment

Video or audio transmission, recording or playback equipment

Element or attachment

D14206

Patent

active

D03393550

REFERENCES:
patent: D309306 (1990-07-01), Weiser et al.
patent: D327265 (1992-06-01), Tasey
patent: D327888 (1992-07-01), Fitzgerald
patent: D331057 (1992-11-01), Isonaga
patent: 4821318 (1989-04-01), Wu
patent: 5003589 (1991-03-01), Chen
Inbound/Outbound, May, 1988, p. 56, headset at lower left.

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