Method and apparatus for circulating water in swimming pools
United States Patent 2073784

Inventors:
Day, Louis J.
Publication Date:
03/16/1937
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Assignee:
JOSAM MFG COMPANY
Primary Class:
210/765
Other Classes:
366/136, 4/DIG.009, 210/754, 137/892, 4/509, 210/764, 210/153, 4/DIG.010, 366/262
International Classes:
C02F1/52; E04H4/12; E04H4/00