Roofing and building material
United States Patent 1902298

Inventors:
Avery, Henry C.
Lester, Kirschbraun
Publication Date:
03/21/1933
View Patent Images:
Download PDF 1902298 pdf       PDF help
Export Citation:
Click for automatic bibliography generation
Assignee:
PATENT & LICENSING CORP
Primary Class:
428/143
Other Classes:
52/518, 428/148, 428/317.700, 428/150, 442/85, 442/68
International Classes:
E04D5/10; E04D5/00