Headset amplifier

Details Headset amplifier Headset amplifier

1989-12-01

1992-06-16

Shooman, Theodore M.

Recording, communication, or information retrieval equipment

Video or audio transmission, recording or playback equipment

Element or attachment

D14223, D14243

Patent

active

D03270688

REFERENCES:
patent: D180637 (1957-07-01), Baum
patent: D272443 (1984-01-01), Wong et al.
patent: D286635 (1986-11-01), Yuen
patent: D318279 (1991-07-01), Laiacona et al.
Stereo Review, Apr. 1989, p. 60, bottom right--Wireless Headphones.
Stereo Review, Apr. 1989, p. 61, bottom left--Koss Kordless Stereophones.

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