Robert L. Hope

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Calgary, CA

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Patents Grantslast 30 patents

Information Patent Grant
Portable top drive
- Patent number 6,024,181
- Issue date Feb 15, 2000
- Nabors Industries, Inc.
- Allan S. Richardson
- E21 - EARTH DRILLING MINING
Information Patent Grant
Portable top drive
- Patent number 5,755,296
- Issue date May 26, 1998
- Nabors Industries, Inc.
- Allan S. Richardson
- E21 - EARTH DRILLING MINING