William C. Christian

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Ashland, OR, US

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Patents Grantslast 30 patents

Information Patent Grant
Drill sharpener
- Patent number 7,172,498
- Issue date Feb 6, 2007
- Professional Tool Manufacturing, LLC
- David A. Bernard
- B24 - GRINDING POLISHING
Information Patent Grant
Precision twist drill sharpener/point splitting machine
- Patent number 5,400,546
- Issue date Mar 28, 1995
- Darex Corporation
- William C. Christian
- B24 - GRINDING POLISHING
Information Patent Grant
End mill sharpener
- Patent number 4,916,866
- Issue date Apr 17, 1990
- Darex Corporation
- David A. Bernard
- B24 - GRINDING POLISHING
Information Patent Grant
Power feed
- Patent number 4,741,226
- Issue date May 3, 1988
- Darex Corporation
- David A. Bernard
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Twist drill point splitting/web thinning apparatus
- Patent number 4,485,596
- Issue date Dec 4, 1984
- Darex Corporation
- David A. Bernard
- B24 - GRINDING POLISHING

Patents Applicationslast 30 patents

Information Patent Application
Reciprocating attachment for power drills
- Publication number 20060070760
- Publication date Apr 6, 2006
- Professional Tool Manufacturing, LLC
- David Bernard
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Application
Drill sharpener
- Publication number 20060003676
- Publication date Jan 5, 2006
- Professional Tool Manufacturing
- David A. Bernard
- B24 - GRINDING POLISHING