Hearing test instrument

Details Hearing test instrument Hearing test instrument

1999-01-20

1999-11-30

Reid, Stella

Medical and laboratory equipment

Equipment for diagnosis, analysis, or treatment

Auricular

2401

Patent

active

D04172787

REFERENCES:
patent: D298773 (1988-11-01), Eckstein et al.
patent: D319501 (1991-08-01), Peterson
patent: 3404235 (1968-10-01), Goldberg
patent: 3745674 (1973-07-01), Thompson et al.
patent: 4667683 (1987-05-01), Dugot

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