Robert P. Hallissy

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Jeannette, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Grader blade with tiered inserts on leading edge
- Patent number 4,770,253
- Issue date Sep 13, 1988
- Kennametal Inc.
- Robert P. Hallissy
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Information Patent Grant
Grader blade with casting/insert assembly on leading edge
- Patent number 4,715,450
- Issue date Dec 29, 1987
- Kennametal Inc.
- Robert P. Hallissy
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES