Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
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Leonard V. Knappmiller — 3 Patents

Center Rutland, VT: #1 of 1 inventorsTop 100%
Vermont: #1,707 of 4,968 inventorsTop 35%
Overall (All Time): #1,571,930 of 4,157,543Top 40%
3 Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
7810845 Pipe thread sealant sheath 2010-10-12
6935360 Fire hydrant protective cover and visibility marker 2005-08-30
6578762 Payment accepting trash receptacle 2003-06-17