Disposable face mask

Details Disposable face mask Disposable face mask

1980-09-24

1983-02-15

Ansher, Bernard

Equipment for safety, protection, and rescue

Fire extinguisher or casing therefor

Portable or hand held

D2902, D2499

Patent

active

D02679850

REFERENCES:
patent: D219082 (1970-10-01), Bird
patent: D248497 (1978-07-01), Slosek
patent: D249072 (1978-08-01), Revoir
patent: D259817 (1981-07-01), White
patent: 1142990 (1915-06-01), Stern
patent: 4248220 (1981-02-01), White

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