Title:
Pump-vent control
United States Patent 1480936


Inventors:
Ivan, Gonder
Application Number:
US54893522A
Publication Date:
01/15/1924
Filing Date:
04/03/1922
Assignee:
Ivan, Gonder
Primary Class:
Other Classes:
251/293, 285/197, 403/108
International Classes:
F04B53/04
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