David J. Helms

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Clarence, NY, US

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Patents Grantslast 30 patents

Information Patent Grant
Device and method for marking spheres with alignment indicia and th...
- Patent number 9,056,236
- Issue date Jun 16, 2015
- David J Helms
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES

Patents Applicationslast 30 patents

Information Patent Application
DEVICE AND METHOD FOR MARKING SPHERES WITH ALIGNMENT INDICIA AND TH...
- Publication number 20130102416
- Publication date Apr 25, 2013
- David J. Helms
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES