Fireproof door
United States Patent 1559983

Inventors:
Pfeiffer, Charles C.
Publication Date:
11/03/1925
View Patent Images:
Download PDF 1559983 pdf       PDF help
Export Citation:
Click for automatic bibliography generation
Assignee:
KNOBURN PRODUCTS CORP
Primary Class:
52/784.120
Other Classes:
52/455
International Classes:
E06B5/16; E06B5/10