JH

John Hatfield

Nike: 2 patents #207 of 551Top 40%
Overall (2016): #130,006 of 481,213Top 30%
2
Patents 2016

Issued Patents 2016

Patent #TitleCo-InventorsDate
9265998 Golf putter with adjustable counterbalance weight Brian Kammerer, David N. Franklin 2016-02-23
9266000 Golf putter with adjustable counterbalance weight Brian Kammerer, David N. Franklin 2016-02-23