Joseph R. Szarka

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Wooster, OH, US

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Patents Grantslast 30 patents

Information Patent Grant
Apparatus and method for a drilling assembly
- Patent number 8,033,345
- Issue date Oct 11, 2011
- Astec Industries, Inc.
- Guy Randall
- E21 - EARTH DRILLING MINING
Information Patent Grant
Drive mechanism for boring machine
- Patent number 7,134,513
- Issue date Nov 14, 2006
- Astec Industries, Inc.
- Guy Randall
- E21 - EARTH DRILLING MINING