Centrifugal pump
United States Patent 2431221

Inventors:
Allen, Frank B.
Publication Date:
11/18/1947
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Assignee:
ALLEN SHERMAN HOFF COMPANY
Primary Class:
415/112
Other Classes:
277/351, 415/196, 415/217.100, 277/559, 277/431
International Classes:
F04D7/04; F04D29/16; F04D7/00; F04D29/08
US Patent References:
2210401Pumping mechanism