DK

David R. Kleffman

📍 North Platte, NE: #13 of 31 inventorsTop 45%
🗺 Nebraska: #2,834 of 5,697 inventorsTop 50%
Overall (All Time): #3,966,794 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4637668 Locomotive safety device Leroy V. Phiffer 1987-01-20