John Piotrowski — 2 Patents | Patent Leaderboard

John Piotrowski has been granted 2 US patents. The first was granted in 2002 and the most recent in March 2010. John Piotrowski ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list John Piotrowski in Lawrence, NJ, US.

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
7674186	Direction and distance correcting golf putter	David M. Bitko, Sheldon S. Bitko, Robert A. Coon	2010-03-09
6358162	Golf putter with green-reading features	David M. Bitko, Sheldon S. Bitko	2002-03-19

John Piotrowski — 2 Patents

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