DT

David E. Tapphorn

📍 Oakley, KS: #3 of 7 inventorsTop 45%
🗺 Kansas: #4,268 of 12,005 inventorsTop 40%
Overall (All Time): #2,296,297 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5337834 Disk excavating and grading attachment — 1994-08-16
4597452 Disk grading terrace plow Ralph M. Tapphorn 1986-07-01