Respiration mask

Details Respiration mask Respiration mask

1980-03-04

1982-09-14

Ansher, Bernard

Equipment for safety, protection, and rescue

Fire extinguisher or casing therefor

Portable or hand held

D2902, D2402

Patent

active

D02661969

REFERENCES:
patent: D131556 (1942-03-01), Karabin et al.
patent: D231803 (1974-06-01), Huddy
patent: D239469 (1976-04-01), Halldin et al.
patent: D247982 (1978-05-01), Huddy
patent: 2931356 (1960-04-01), Schwarz
patent: 3315674 (1967-04-01), Bloom et al.
Wilson Industrial Safety Cat., 3/1/57, p. 48, Item Respirator, Style No. 1.

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