Pressure reducer unit for emergency breathing systems

Details Pressure reducer unit for emergency breathing systems Pressure reducer unit for emergency breathing systems

1986-07-21

1991-04-02

Largen, James R.

Equipment for safety, protection, and rescue

Fire extinguisher or casing therefor

Portable or hand held

D23235, D23259

Patent

active

D03159710

REFERENCES:
patent: D53497 (1919-07-01), Gradolph
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patent: 2966165 (1960-12-01), Britton
patent: 3400735 (1968-09-01), Favors et al.
patent: 3456642 (1969-07-01), Cupp
patent: 3760842 (1973-09-01), Mikiya
patent: 4176418 (1979-12-01), Scott
patent: 4239058 (1980-12-01), Peters
patent: 4274404 (1981-06-01), Molzan et al.
patent: 4498471 (1985-02-01), Kranz et al.

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