David Dunbar

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Anza, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Tool for centering a punch or drill on a stud's broken face
- Patent number 5,820,314
- Issue date Oct 13, 1998
- David A. Dunbar
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Tool for centering a punch or drill on a stud's broken face
- Patent number 5,388,933
- Issue date Feb 14, 1995
- David Dunbar
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR