Stephen J. Norris

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League City, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Sand removal and device retrieval tool
- Patent number 6,978,841
- Issue date Dec 27, 2005
- Weatherford/Lamb, Inc.
- Corey E. Hoffman
- E21 - EARTH DRILLING MINING
Information Patent Grant
Sand removal method
- Patent number 6,719,056
- Issue date Apr 13, 2004
- Weatherford/Lamb, Inc.
- Corey E. Hoffman
- E21 - EARTH DRILLING MINING
Information Patent Grant
Sand removal and device retrieval tool
- Patent number 6,640,904
- Issue date Nov 4, 2003
- Weatherford/Lamb, Inc.
- Corey E. Hoffman
- E21 - EARTH DRILLING MINING
Information Patent Grant
Sand removal and device retrieval tool
- Patent number 6,427,776
- Issue date Aug 6, 2002
- Weatherford/Lamb, Inc.
- Corey E. Hoffman
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
Sand removal and device retrieval tool
- Publication number 20040177951
- Publication date Sep 16, 2004
- Weatherford/Lamb, Inc.
- Corey E. Hoffman
- E21 - EARTH DRILLING MINING
Information Patent Application
Sand removal and device retrieval tool
- Publication number 20030226664
- Publication date Dec 11, 2003
- Weatherford/Lamb, Inc.
- Corey E. Hoffman
- E21 - EARTH DRILLING MINING
Information Patent Application
Sand removal and device retrieval tool
- Publication number 20020174987
- Publication date Nov 28, 2002
- Weatherford/Lamb
- Corey E. Hoffman
- E21 - EARTH DRILLING MINING