Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
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Keith E. Brownfield — 1 Patent

WSWarner & Swasey: 1 patents #36 of 82Top 45%
Lansing, MI: #250 of 487 inventorsTop 55%
Michigan: #49,615 of 86,293 inventorsTop 60%
Overall (All Time): #4,028,229 of 4,157,543Top 100%
1 Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
RE31500 Material-handling vehicle 1984-01-17