Title:
Pumping apparatus
United States Patent 1750170
Inventors:
August, Frisch
Publication Date:
03/11/1930
Export Citation:
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Assignee:
August, Frisch
Primary Class:
417/238
Other Classes:
137/340, 137/341, 165/120, 417/465
International Classes:
F04B1/00; F04B53/08; F04B1/00; F04B53/00
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