Breathing mask

Details Breathing mask Breathing mask

1978-07-05

1981-04-21

Ansher, Bernard

Equipment for safety, protection, and rescue

Fire extinguisher or casing therefor

Portable or hand held

D2902

Patent

active

D02589940

REFERENCES:
patent: D231803 (1974-06-01), Huddy
patent: D236033 (1975-07-01), Dryden
patent: D239469 (1976-04-01), Halldin et al.
patent: 3315674 (1967-04-01), Bloom et al.
patent: 3556097 (1971-01-01), Wallace

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