DH

David Helenius

PI Progressive Components International: 3 patents #3 of 11Top 30%
Overall (All Time): #1,518,149 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
9011138 Collapsing core part retainer sleeve Alan P. Hickok 2015-04-21
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