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USPTO Patent Rankings Data through Sept 30, 2025
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David P. Kapturowski

STSpruce Environmental Technologies: 1 patents #1 of 1Top 100%
Groveland, MA: #1 of 5 inventorsTop 20%
Massachusetts: #1,083 of 4,501 inventorsTop 25%
Overall (1997): #163,025 of 185,788Top 90%
1 Patents 1997

Issued Patents 1997

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
D381411 Fan housing 1997-07-22