Douglas Costall

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Okotoks, CA

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Patents Grantslast 30 patents

Information Patent Grant
Hybrid coiled tubing/fluid pumping unit
- Patent number 7,207,389
- Issue date Apr 24, 2007
- Leader Energy Services Corp.
- Robert Joseph Foster
- E21 - EARTH DRILLING MINING
Information Patent Grant
Hybrid coiled tubing/conventional drilling unit
- Patent number 5,842,530
- Issue date Dec 1, 1998
- Canadian Fracmaster Ltd.
- Donald A. Smith
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
Hybrid coiled tubing/fluid pumping unit
- Publication number 20050082064
- Publication date Apr 21, 2005
- Leader Energy Services Corp.
- Robert Joseph Foster
- E21 - EARTH DRILLING MINING