Title:
Building construction
United States Patent 2388968

Inventors:
Hedgren, Arthur W.
Publication Date:
11/13/1945
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Assignee:
ROBERTSON CO H H
Primary Class:
52/506.050
Other Classes:
52/542, 105/422, 52/512, 52/508, 52/550, 52/549, 52/409
International Classes:
E04B5/10