Howard J. Walk

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Arlington, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Metal-face-seal rock bit
- Patent number 6,513,607
- Issue date Feb 4, 2003
- Baker Hughes Incorporated
- Gregory W. Peterson
- E21 - EARTH DRILLING MINING
Information Patent Grant
Replaceable multiple TCI kerf ring
- Patent number 6,367,569
- Issue date Apr 9, 2002
- Baker Hughes Incorporated
- Howard J. Walk
- E21 - EARTH DRILLING MINING
Information Patent Grant
Earth boring bit with recessed roller bearing
- Patent number 5,092,412
- Issue date Mar 3, 1992
- Baker Hughes Incorporated
- Howard J. Walk
- E21 - EARTH DRILLING MINING
Information Patent Grant
Flow through raise boring bit
- Patent number 4,832,135
- Issue date May 23, 1989
- Baker Hughes Incorporated
- Howard J. Walk
- E21 - EARTH DRILLING MINING
Information Patent Grant
Reversible roller stabilizer extensions for earth boring head
- Patent number 4,697,652
- Issue date Oct 6, 1987
- Reed Mining Tools, Inc.
- Howard J. Walk
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
Metal-face-seal rock bit
- Publication number 20020108788
- Publication date Aug 15, 2002
- Gregory W. Peterson
- E21 - EARTH DRILLING MINING