Title:
Safety vent valve
United States Patent 2112641

Inventors:
Wheaton, Abram W.
Publication Date:
03/29/1938
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Assignee:
A W WHEATON BRASS WORKS
Primary Class:
137/512.100
Other Classes:
137/493.100, 137/533, 137/544, 137/560, 137/512.300, 137/512.200
International Classes:
F16K17/19; F16K17/18