JS

Jerry W. Scherfenberg

DA Dynamic Air: 2 patents #4 of 10Top 40%
📍 Excelsior, MN: #99 of 237 inventorsTop 45%
🗺 Minnesota: #23,881 of 52,454 inventorsTop 50%
Overall (All Time): #2,331,133 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4836499 Butterfly valves James R. Steele 1989-06-06
4252479 Rotary diverter valves — 1981-02-24