Title:
Closed circuit breathing apparatus
United States Patent 2852023
US Patent References:
/1144812.html
- - 1144812

Oxygen generator with integrated initiating device
- - 2507450


Inventors:
Hamilton, William C.
Bovard, Robert M.
Publication Date:
09/16/1958
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Assignee:
MINE SAFETY APPLIANCES CO
Primary Class:
128/205.120
Other Classes:
222/5, 128/205.210
International Classes:
A61M16/00; A62B7/10
Foreign References:
DE610741C