Combined respirator face piece and strap units

Details Combined respirator face piece and strap units Combined respirator face piece and strap units

1981-03-02

1983-11-01

Burke, Wallace R.

Equipment for safety, protection, and rescue

Fire extinguisher or casing therefor

Portable or hand held

D2902

Patent

active

D02712466

REFERENCES:
patent: D190705 (1961-06-01), Gongoll
patent: 2166164 (1939-07-01), Lehmbon g
patent: 2327995 (1943-08-01), Bulbulian
patent: 2341566 (1944-02-01), Monro
patent: 2344669 (1944-03-01), Barken et al.
patent: 2652828 (1953-09-01), Matheson
patent: 2744525 (1956-05-01), Whipple
patent: 2823671 (1958-02-01), Ganelick
patent: 2858828 (1958-11-01), Matheson
patent: 2939458 (1960-06-01), Lundquist
patent: 2999498 (1961-09-01), Matheson

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