John Piotrowski

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South Ocean Pines, MD, US

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Patents Grantslast 30 patents

Information Patent Grant
Direction and distance correcting golf putter
- Patent number 7,674,186
- Issue date Mar 9, 2010
- David M. Bitko
- A63 - SPORTS GAMES AMUSEMENTS

Patents Applicationslast 30 patents

Information Patent Application
Direction and distance correcting golf putter
- Publication number 20080293513
- Publication date Nov 27, 2008
- David M. Bitko
- A63 - SPORTS GAMES AMUSEMENTS