Infra-red ray transmission machine for cordless headphone

Details Infra-red ray transmission machine for cordless headphone Infra-red ray transmission machine for cordless headphone

1990-11-19

1993-07-27

Ansher, Bernard

Recording, communication, or information retrieval equipment

Video or audio transmission, recording or playback equipment

Radio transmitter

D14299

Patent

active

D03377679

REFERENCES:
patent: D262041 (1981-11-01), Schmidt
patent: D274631 (1984-07-01), Smith, III et al.
patent: D275096 (1984-08-01), Festa et al.
Positioning and Tracking Controls; Oct. 1984; p. 8; (lower right hand corner).

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