Ralph Kennedy

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Pataskala, OH, US

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Patents Grantslast 30 patents

Information Patent Grant
Device for forcing a reflective highway post into the ground
- Patent number 5,012,873
- Issue date May 7, 1991
- Ampsco Corporation
- Ralph Kennedy
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Information Patent Grant
Steerable self-regulating concrete cutting saw
- Patent number 4,848,845
- Issue date Jul 18, 1989
- Ampsco Corporation
- Ralph Kennedy
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
Device for cutting a receptacle in pavement to receive a reflector
- Patent number 4,797,025
- Issue date Jan 10, 1989
- Ampsco Corporation
- Ralph Kennedy
- B28 - WORKING CEMENT, CLAY, OR STONE