Earphone

Details Earphone Earphone

1981-08-17

1984-03-06

Corrigan, Jane E.

Recording, communication, or information retrieval equipment

Computer, data processor equipment

D14 36, D1403

Patent

active

D02729040

REFERENCES:
patent: D248158 (1978-06-01), Read
patent: 2474135 (1949-06-01), White
patent: 3906478 (1975-09-01), Smey

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