John C. Wisehart

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Stillwater, OK, US

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Patents Grantslast 30 patents

Information Patent Grant
Apparatus and method for determining boring direction when boring u...
- Patent number 5,880,680
- Issue date Mar 9, 1999
- The Charles Machine Works, Inc.
- John C. Wisehart
- E21 - EARTH DRILLING MINING
Information Patent Grant
Electronic compass
- Patent number 5,850,624
- Issue date Dec 15, 1998
- The Charles Machine Works, Inc.
- Michael F. Gard
- E21 - EARTH DRILLING MINING
Information Patent Grant
Roll independent variable inductance inclinometer
- Patent number 5,703,484
- Issue date Dec 30, 1997
- The Charles Machine Works, Inc.
- John W. Bieberdorf
- G01 - MEASURING TESTING