Alfred G. Perkins

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McCormick, SC, US

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Patents Grantslast 30 patents

Information Patent Grant
Method of lining a pipeline using a constant extrusion pressure
- Patent number 5,779,948
- Issue date Jul 14, 1998
- Alfred G. Perkins
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
Increased efficiency method for lining a pipe with a cement mortar
- Patent number 5,650,103
- Issue date Jul 22, 1997
- Mainlining Service, Inc.
- Alfred G. Perkins
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Increased efficiency apparatus for lining a pipe with a cement mortar
- Patent number 5,443,377
- Issue date Aug 22, 1995
- Mainlining Service, Inc.
- Alfred G. Perkins
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Method for lining a pipe with a cement mortar
- Patent number 5,246,641
- Issue date Sep 21, 1993
- Mainlining Service, Inc.
- Alfred G. Perkins
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES