DZ

David F. Zupfer

📍 Stillwater, MN: #488 of 719 inventorsTop 70%
🗺 Minnesota: #32,449 of 52,454 inventorsTop 65%
Overall (All Time): #4,017,054 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4525006 Electrical disconnect tool David J. Nowak 1985-06-25