Concrete wall construction
United States Patent 1488726

Inventors:
Alexander, William A.
Alexander, Harry D.
Publication Date:
04/01/1924
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Assignee:
Alexander, William A.
Alexander, Harry D.
Primary Class:
52/715
Other Classes:
249/219.100, 52/383, 52/379, 52/DIG.006
International Classes:
E04B1/41