Disposable respirator

Details Disposable respirator Disposable respirator

1976-05-20

1978-07-11

Ansher, Bernard

Equipment for safety, protection, and rescue

Fire extinguisher or casing therefor

Portable or hand held

D2402, D2499, D2902

Patent

active

D02484978

REFERENCES:
patent: D205332 (1966-07-01), Nelson
patent: D219082 (1970-10-01), Bird
patent: D236033 (1975-07-01), Dryden
patent: 3779244 (1973-12-01), Weeks, Jr. et al.
patent: 3802429 (1974-04-01), Bird
patent: 3971369 (1976-07-01), Aspelin et al.
patent: 3985132 (1976-10-01), Boyce et al.

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