Method for maintaining swimming pools in alpha sanitary condition
United States Patent 1762314

Inventors:
Sutphen, Robert M.
Francis, Booraem John
Publication Date:
06/10/1930
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Assignee:
Sutphen, Robert M.
Francis, Booraem John
Primary Class:
210/752
Other Classes:
210/754, 366/107, 210/167.120, 210/758, 261/124, 210/167.110, 210/765, 261/29, 210/153
International Classes:
E04H4/12; E04H4/00