Gas delivery mask

Details Gas delivery mask Gas delivery mask

1987-07-24

1990-09-04

Word, A. Hugo

Equipment for safety, protection, and rescue

Fire extinguisher or casing therefor

Portable or hand held

Patent

active

D03104311

REFERENCES:
patent: D168311 (1952-12-01), Lewis
patent: D250131 (1978-10-01), Lewis et al.
patent: D262322 (1981-12-01), Mizerak
patent: D294410 (1988-02-01), Montesi
patent: 4723542 (1988-02-01), Giffard

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