Combined earplug and insertion stem

Details Combined earplug and insertion stem Combined earplug and insertion stem

1998-05-08

1999-08-31

Zarfas, Louis S.

Medical and laboratory equipment

Prophylactic article

Ear plug or nose clip

2404

Patent

active

D04133790

REFERENCES:
patent: D234321 (1975-02-01), Visor
patent: 2888921 (1959-06-01), Nielson et al.
patent: 3856007 (1974-12-01), Leight
patent: 3881570 (1975-05-01), Lewis

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