A-Lok Corporation

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Trenton, NJ, US

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Patents Grantslast 30 patents

Information Patent Grant
Molded pleated gasket and device for installing same on pipe
- Patent number 4,103,901
- Issue date Aug 1, 1978
- A-Lok Corporation
- John Ditcher
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
Lifting arrangements for massive objects
- Patent number 4,088,361
- Issue date May 9, 1978
- A-Lok Corporation
- John Ditcher
- B66 - HOISTING LIFTING HAULING
Information Patent Grant
Gasket seal between sewer pipe and manhole opening
- Patent number 4,073,048
- Issue date Feb 14, 1978
- A-Lok Corporation
- John Ditcher
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
Joint assembly for vertically aligned sectionalized manhole structu...
- Patent number 3,980,311
- Issue date Sep 14, 1976
- A-Lok Corporation
- John Ditcher
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Apparatus for forming steps in manholes and the like
- Patent number 3,974,615
- Issue date Aug 17, 1976
- A-Lok Corporation
- John Ditcher
- B28 - WORKING CEMENT, CLAY, OR STONE

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