Paul A. D'Ambra

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Andover, MA, US

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Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus for sharpening drill bits
- Patent number 6,419,562
- Issue date Jul 16, 2002
- Paul A D'Ambra
- B24 - GRINDING POLISHING

Patents Applicationslast 30 patents

Information Patent Application
METHOD AND APPARATUSFOR SHARPENING DRILL BITS
- Publication number 20020077040
- Publication date Jun 20, 2002
- Paul A. D'Ambra
- B24 - GRINDING POLISHING