Jeffrey Clifford Helstrom

📍 Waconia, MN: #58 of 161 inventorsTop 40%

🗺 Minnesota: #19,064 of 52,454 inventorsTop 40%

Overall (All Time): #1,514,974 of 4,157,543Top 40%

Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #	Title	Co-Inventors	Date
8944933	Golf training device	—	2015-02-03
6592464	Winter golf driving range	—	2003-07-15
6325726	Winter golf driving range	—	2001-12-04