Eyepiece for gas masks

Details Eyepiece for gas masks Eyepiece for gas masks

1982-06-04

1985-03-19

Lucas, Susan J.

Equipment for safety, protection, and rescue

Fire extinguisher or casing therefor

Portable or hand held

D 2234, D16101

Patent

active

D02780879

REFERENCES:
patent: D184011 (1958-12-01), Hirshman et al.
patent: 988005 (1911-03-01), Malcom
patent: 1099147 (1914-06-01), Hansen
patent: 1417326 (1922-05-01), Jacobsson
patent: 1754419 (1930-04-01), Drager
patent: 2005072 (1935-06-01), Booharin
patent: 2026435 (1935-12-01), Ratti
patent: 2238492 (1941-04-01), Leguillon
patent: 4021103 (1977-05-01), Gaspari

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