John K. Kershaw

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Montgomery, AL, US

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Patents Grantslast 30 patents

Information Patent Grant
High-capacity ballast reconditioning apparatus
- Patent number 5,183,118
- Issue date Feb 2, 1993
- Knox Kershaw, Inc.
- John K. Kershaw
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Information Patent Grant
Ballast reconditioning apparatus with multiple excavating wheels an...
- Patent number 5,109,775
- Issue date May 5, 1992
- Knox Kershaw, Inc.
- John K. Kershaw
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Information Patent Grant
Ballast reconditioning apparatus
- Patent number 5,029,649
- Issue date Jul 9, 1991
- Knox Kershaw, Inc.
- John K. Kershaw
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES