Charles W. Helm

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Rocky Hill, CT, US

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Patents Grantslast 30 patents

Information Patent Grant
Creep-resistant optical fiber attachment
- Patent number 6,317,555
- Issue date Nov 13, 2001
- Cidra Corporation
- Robert J. Maron
- G02 - OPTICS
Information Patent Grant
Near bit offset stabilizer
- Patent number 4,877,092
- Issue date Oct 31, 1989
- Teleco Oilfield Services Inc.
- Charles W. Helm
- E21 - EARTH DRILLING MINING
Information Patent Grant
Insulating and electrode structure for a drill string
- Patent number 4,575,681
- Issue date Mar 11, 1986
- Teleco Oilfield Services Inc.
- Donald S. Grosso
- E21 - EARTH DRILLING MINING
Information Patent Grant
Electrical connector for borehole telemetry apparatus
- Patent number 4,319,240
- Issue date Mar 9, 1982
- Teleco Oilfield Services Inc.
- Frederick A. Stone
- E21 - EARTH DRILLING MINING