Title:
PRESSURE DEMAND EXHALATION VALVE
United States Patent 3524464

Inventors:
Glidden, Galen M.
Publication Date:
08/18/1970
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Assignee:
AUTOMATIC SPRINKLER CORP
Primary Class:
137/102
Other Classes:
128/207.120
International Classes:
A62B18/10; A62B18/00; F16K15/14; A62B9/02




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