Title:
ROOF DRAIN
United States Patent 3529723
Inventors:
Hagedorn, Charles L.
Publication Date:
09/22/1970
Export Citation:
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Assignee:
Charles, Hagedorn L.
WADE INTERN LTD
Primary Class:
210/163
International Classes:
E04D13/04; E04D13/04; (IPC1-7): E03F5/14
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US Patent References:
3349917Strainer assembly for floor drains
2832564Gate valve
2740490Roof drain
2572208Water runoff control construction
2572101Drain fitting for washbasins and the like
2246390Valved floor drain
1791512Roof sump
1348945Double-drainage roof-drain and sediment-cup




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