Title:
Prestressed pipe
Document Type and Number:
United States Patent 3005469

Inventors:
Kenney, James T.
Publication Date:
10/24/1961
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Referenced by:
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Assignee:
IDEVEL CORP
Primary Class:
138/176
Other Classes:
264/229, 138/153, 264/308, 264/256
International Classes:
B28B21/62; F16L9/08; B28B21/00; F16L9/00
US Patent References:
2639731Reinforced concrete pipe
Foreign References:
GB653769A




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