Disposable respiratory mask

Details Disposable respiratory mask Disposable respiratory mask

1976-11-22

1978-08-22

Ansher, Bernard

Equipment for safety, protection, and rescue

Fire extinguisher or casing therefor

Portable or hand held

1281462, D2902, D2499

Patent

active

D02490722

REFERENCES:
patent: D195612 (1963-07-01), Liloia
patent: D235687 (1975-07-01), Bragg
patent: 2752916 (1956-07-01), Haliczer
patent: 3971369 (1976-07-01), Aspelin et al.
patent: 3985132 (1976-10-01), Boyce

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