JH

John F. Helm

📍 Overland Park, KS: #973 of 1,753 inventorsTop 60%
🗺 Kansas: #6,307 of 12,005 inventorsTop 55%
Overall (All Time): #3,491,094 of 4,157,543Top 85%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
6796127 One cycle internal combustion engine — 2004-09-28