Swimming pool
United States Patent 1563850

Inventors:
Hartman, Frank E.
Publication Date:
12/01/1925
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Assignee:
ELECTRIC WATER STERILIZER AND
Primary Class:
210/127
Other Classes:
4/490, 210/167.120, 210/184, 210/167.110, 137/409, 210/258
International Classes:
E04H4/12; E04H4/00