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USPTO Patent Rankings Data through Sept 30, 2025
DH

David Helenius

PIProgressive Components International: 2 patents #2 of 5Top 40%
Leominster, MA: #2 of 27 inventorsTop 8%
Massachusetts: #1,286 of 9,131 inventorsTop 15%
Overall (2011): #105,504 of 364,097Top 30%
2 Patents 2011

Issued Patents 2011

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
8038433 Expandable cavity for injection molding tool James W. Cullison, Glenn Starkey 2011-10-18
8033810 Lock for core assembly for injection molding tool James W. Cullison 2011-10-11