Title:
Roofing
United States Patent 1873886

Inventors:
Heppes, George P.
Publication Date:
08/23/1932
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Assignee:
PATENT & LICENSING CORP
Primary Class:
428/143
Other Classes:
52/557, 428/489, 428/208, 428/201
International Classes:
E04D1/26; E04D1/00