Concrete pipe construction
United States Patent 3228425
US Patent References:
/0922480.html
- - 0922480
/1048045.html
- - 1048045
Method for sealing pipe joints
- - 2138946
Piping element
- - 2325469
Sleeve joint for concrete tubes
- - 2576012
/0922480.html
- - 0922480
/1048045.html
- - 1048045
Method for sealing pipe joints
- - 2138946
Piping element
- - 2325469
Sleeve joint for concrete tubes
- - 2576012
Inventors:
Michael, Pacella
Publication Date:
01/11/1966
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Export Citation:
Assignee:
Michael, Pacella
Primary Class:
Other Classes:
285/293.100
International Classes:
F16L13/11; F16L25/00; F16L13/00
US Patent References:
| 2805683 | Pipe and method for making the same |