Roofing material and the like
United States Patent 2044788

Inventors:
Harshberger, Norman P.
Ochs, Sidney A.
Publication Date:
06/23/1936
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Assignee:
BAKELITE BUILDING PRODUCTS CO
Primary Class:
52/419
Other Classes:
52/518, 52/557, 52/553
International Classes:
D06N5/00; E04D5/10; E04D5/00