Method and construction of prestressed structures
United States Patent 3146549
US Patent References:
/1291079.html
- - 1291079

Building stave
- - 1497141

Building stave
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- - 1931470

Ferro-concrete beam
- - 2155121


Inventors:
James, Arthur M.
Publication Date:
09/01/1964
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Assignee:
James, Arthur M.
Primary Class:
52/223.300
Other Classes:
138/176, 264/229, 52/223.120
International Classes:
E04G21/12
US Patent References:
2413990Process of making prestressed reinforced concrete
2706496Concentric pipe insulator and spacer
2959895Structure for placing in contact slow moving members supporting heavy loads
Foreign References:
FR1041337A
DE886378C
IT485552B
CA499786A
GB754956A