Method of reenforcing beams
United States Patent 1989834

Inventors:
Watson, Charles G.
Publication Date:
02/05/1935
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Assignee:
Watson, Charles G.
Primary Class:
29/897.100
Other Classes:
14/74.500, 52/634, 29/402.160, 105/416
International Classes:
E04C3/07; E04C3/04