Protective facial mask

Details Protective facial mask Protective facial mask

1987-12-01

1989-11-28

Burke, Wallace R.

Equipment for safety, protection, and rescue

Fire extinguisher or casing therefor

Portable or hand held

Patent

active

D03048691

REFERENCES:
patent: D293829 (1988-01-01), Johnston
patent: 4671271 (1987-06-01), Bishop et al.

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