Prestressed concrete structure
United States Patent 2590685

Inventors:
Leo, Coff
Publication Date:
03/25/1952
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Assignee:
Leo, Coff
Primary Class:
404/70
Other Classes:
52/294, 52/408, 52/600
International Classes:
B28B23/04; E01C7/16; B28B23/02; E01C7/00
US Patent References:
2323848Pavement
2329189Reinforced concrete construction
2329670Process for making pavements and the like
2425079Reinforced concrete shell construction and method of manufacture therefor
Foreign References:
GB557025A