Vented ear tip for hearing aid

Medical and laboratory equipment – Equipment for diagnosis – analysis – or treatment – Orthopedic or chiropractic

Patent

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Details

D24 67, D2499

Patent

active

D02674297

REFERENCES:
patent: D141071 (1945-05-01), Hechler
patent: D210666 (1968-04-01), Beaudry
patent: D213109 (1969-01-01), Young
patent: D259279 (1981-05-01), Takeda
patent: 2230738 (1941-02-01), Baum
patent: 3061689 (1962-10-01), McCarrell et al.

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