WD

William G. Drapak

OS Ontrak Systems: 2 patents #12 of 45Top 30%
Overall (All Time): #2,255,848 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
6003185 Hesitation free roller Albert M. Saenz, David L. Thrasher, Wilbur C. Krusell 1999-12-21
5840129 Hesitation free roller Albert M. Saenz, David L. Thrasher, Wilbur C. Krusell 1998-11-24