Headphone

Details Headphone Headphone

1989-01-27

1991-12-03

Shooman, Theodore M.

Recording, communication, or information retrieval equipment

Video or audio transmission, recording or playback equipment

Speaker or housing therefor

D14205

Patent

active

D03220710

REFERENCES:
patent: D254616 (1980-04-01), Tabata
patent: D299337 (1989-01-01), Wiegel
patent: 3555207 (1971-01-01), Cech
patent: 4754484 (1988-06-01), Larkin et al.
David Clark Company Noise Attenuating Headsets Brochure; p. 5; top right-Model H7030.

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