Greg T. Harrison

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Stillwater, OK, US

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Patents Grantslast 30 patents

Information Patent Grant
Drill pipe with upset ends having constant wall thickness and metho...
- Patent number 6,808,210
- Issue date Oct 26, 2004
- The Charles Machine Works, Inc.
- Gregory T. Harrison
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Screw drive tool joint wrench
- Patent number 5,546,833
- Issue date Aug 20, 1996
- The Charles Machine Works, Inc.
- R. Brian Holdeman
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS