Title:
Building construction
Document Type and Number:
United States Patent 1474148

Inventors:
Hopkins, Ralph Z.
Publication Date:
11/13/1923
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Referenced by:
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Assignee:
Hopkins, Ralph Z.
Primary Class:
52/223.900
Other Classes:
52/91.100, 52/586.100, 52/11, 52/236.600
International Classes:
E04B1/22; E04B5/04; E04C3/22; E04B1/20; E04C3/20




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