DH

David L. Heldt

DY Dyneer: 2 patents #7 of 26Top 30%
Overall (All Time): #2,321,986 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
4903810 Clutch shoe construction and method of making same George W. Stock 1990-02-27
4736503 Clutch shoe construction and method of making same George W. Stock 1988-04-12