Brandon W. Fisher

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Berlin, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Self-retaining downhole-hammer drill bit
- Patent number 6,827,162
- Issue date Dec 7, 2004
- Center Rock, Inc.
- Brandon W. Fisher
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC

Patents Applicationslast 30 patents

Information Patent Application
Self-retaining downhole-hammer drill bit
- Publication number 20040084225
- Publication date May 6, 2004
- Center Rock, Inc.
- Brandon W. Fisher
- E21 - EARTH DRILLING MINING