Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
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Harry C. Sangree — 1 Patent

Craigville, MA: #1 of 1 inventorsTop 100%
Massachusetts: #56,664 of 88,656 inventorsTop 65%
Overall (All Time): #4,058,329 of 4,157,543Top 100%
1 Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4406606 Apparatus for producing soil building blocks 1983-09-27