Hearing aid

Details Hearing aid Hearing aid

1991-09-20

1993-08-17

Reid, Stella

Medical and laboratory equipment

Equipment for diagnosis, analysis, or treatment

Auricular

Patent

active

D03385302

REFERENCES:
patent: D266271 (1982-09-01), Johanson et al.
patent: D273707 (1984-05-01), McCall
patent: 4945569 (1990-07-01), Kulman

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