Donald A. Smith

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Innisfail, CA

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Patents Grantslast 30 patents

Information Patent Grant
Orienting tool for coiled tubing drilling
- Patent number 5,894,896
- Issue date Apr 20, 1999
- Canadian Fracmaster Ltd.
- Donald Smith
- 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
Information Patent Grant
Method and apparatus for erosive stimulation of open hole formations
- Patent number 5,462,129
- Issue date Oct 31, 1995
- Canadian Fracmaster Ltd.
- Jim E. Best
- E21 - EARTH DRILLING MINING
Information Patent Grant
Coiled tubing connector
- Patent number 5,452,923
- Issue date Sep 26, 1995
- Canadian Fracmaster Ltd.
- Donald A. Smith
- E21 - EARTH DRILLING MINING
Information Patent Grant
Hydraulic disconnect
- Patent number 5,419,399
- Issue date May 30, 1995
- Canadian Fracmaster Ltd.
- Donald A. Smith
- E21 - EARTH DRILLING MINING