Concrete construction
United States Patent 1587500

Inventors:
Blackman, Roy C.
Publication Date:
06/08/1926
View Patent Images:
Download PDF 1587500 pdf       PDF help
Export Citation:
Click for automatic bibliography generation
Assignee:
Blackman, Roy C.
Primary Class:
52/412
Other Classes:
52/570, 52/565
International Classes:
E04C1/40; E04B2/02; E04C1/00