David G. Powell

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Wellesley, MA, US

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Patents Grantslast 30 patents

Information Patent Grant
Glideway crowning plate and method thereof for creating a crown on...
- Patent number 10,759,017
- Issue date Sep 1, 2020
- David G. Powell
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Universal sharpening jig for a cutting blade
- Patent number 9,221,144
- Issue date Dec 29, 2015
- David G. Powell
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Sharpening apparatus for plane iron crowning
- Patent number 8,529,316
- Issue date Sep 10, 2013
- David G. Powell
- B24 - GRINDING POLISHING

Patents Applicationslast 30 patents

Information Patent Application
GLIDEWAY CROWNING PLATE AND METHOD THEREOF FOR CREATING A CROWN ON...
- Publication number 20190291231
- Publication date Sep 26, 2019
- David G. Powell
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Application
UNIVERSAL SHARPENING JIG FOR A CUTTING BLADE
- Publication number 20150174723
- Publication date Jun 25, 2015
- David G. Powell
- B24 - GRINDING POLISHING
Information Patent Application
Sharpening apparatus for plane iron crowning
- Publication number 20100075583
- Publication date Mar 25, 2010
- David G. Powell
- B24 - GRINDING POLISHING
Information Patent Application
Sharpening apparatus
- Publication number 20050252501
- Publication date Nov 17, 2005
- David G. Powell
- B24 - GRINDING POLISHING
Information Patent Application
Precision abrasive finishing apparatus
- Publication number 20050255803
- Publication date Nov 17, 2005
- David G. Powell
- B24 - GRINDING POLISHING