Hearing protector

Details Hearing protector Hearing protector

1987-12-11

1992-12-22

Reid, Stella

Medical and laboratory equipment

Prophylactic article

Ear plug or nose clip

D14205

Patent

active

D03319660

REFERENCES:
patent: D241881 (1976-10-01), Peterson et al.
patent: D245202 (1977-01-01), Asker
patent: D269611 (1983-07-01), Saito
patent: D292530 (1987-10-01), Anderson
patent: 3288246 (1966-11-01), Allen
patent: 3319736 (1967-05-01), Reynolds, Jr.
patent: 3339667 (1967-09-01), Speelman

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