DD

D. Keith Dewey

JD John Deere: 1 patents #2,957 of 5,518Top 55%
📍 Waterloo, IA: #186 of 348 inventorsTop 55%
🗺 Iowa: #8,735 of 15,303 inventorsTop 60%
Overall (All Time): #3,914,428 of 4,157,543Top 95%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4967544 Automatic speed control system for a harvesting assembly Duane Herbert Ziegler, Charles P. Barbaro, Steven L. Wildemuth, Frederick W. Nelson, Kenneth D. Friend +1 more 1990-11-06