VARIABLE OUTPUT POSITIVE DISPLACEMENT BELLOWS PUMP
United States Patent 3529908

Inventors:
Smith, Edward M.
Publication Date:
09/22/1970
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Assignee:
GORMAN RUPP CO
Primary Class:
417/472
Other Classes:
92/44, 92/13.200, 92/84, 92/43
International Classes:
F04B43/08; F04B53/10; F04B43/00; F04B43/08; F04B49/00
US Patent References:
3354830Pump means
Foreign References:
GB946565A




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