Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
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David Nusbaum — 1 Patent

JDJohn Deere: 1 patents #2,957 of 5,518Top 55%
Shell Rock, IA: #10 of 16 inventorsTop 65%
Iowa: #8,735 of 15,303 inventorsTop 60%
Overall (All Time): #3,930,574 of 4,157,543Top 95%
1 Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4840604 Master safety shield with deflecting door Robert L. Mayfield 1989-06-20