Hearing aid housing

Details Hearing aid housing Hearing aid housing

1991-12-03

1993-10-19

Reid, Stella

Medical and laboratory equipment

Equipment for diagnosis, analysis, or treatment

Auricular

Patent

active

D03405222

REFERENCES:
patent: D148320 (1948-01-01), Penn
patent: D153150 (1949-03-01), Hull
patent: D167873 (1952-09-01), Watson
patent: D231235 (1974-04-01), Gath
patent: 2497336 (1950-02-01), Young

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