Earplug for a hearing aid

Details Earplug for a hearing aid Earplug for a hearing aid

1994-08-01

1996-03-26

Zarfas, Louis S.

Medical and laboratory equipment

Prophylactic article

Ear plug or nose clip

D24174

Patent

active

D03683095

REFERENCES:
patent: D259279 (1981-05-01), Takeda
patent: D272946 (1984-03-01), Scanlon
patent: 2246737 (1941-06-01), Knudsen
patent: 3061689 (1962-10-01), McCarrell et al.
patent: 3415246 (1968-10-01), Hill
patent: 5046580 (1991-09-01), Barton
patent: 5332871 (1994-07-01), Carrigan

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