Earphone

Details Earphone Earphone

1981-06-03

1984-01-31

Pellinen, A. D.

179182A, 179186, H04R 110

Patent

active

044291949

ABSTRACT:
An earphone comprising a housing formed on the outer periphery of the front face with a flange for preventing the housing from disengagement from the concha when the housing is received in a recess of the concha, said housing being sized to be received in the recess of the concha and having an electroacaustic transducer built in.

REFERENCES:
patent: 1753817 (1930-04-01), Aber
patent: 2975244 (1961-03-01), Lehr
patent: 3293379 (1966-12-01), Gorike
patent: 3565073 (1971-02-01), Giesy
patent: 3586794 (1971-06-01), Michaelis
patent: 4258705 (1981-03-01), Sorenson et al.

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