DH

David E. Hiland

EA E.I. Du Pont De Nemours And: 2 patents #2,942 of 8,010Top 40%
📍 Seaford, DE: #31 of 80 inventorsTop 40%
🗺 Delaware: #3,234 of 7,163 inventorsTop 50%
Overall (All Time): #2,369,121 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4246847 Bumper assisted for cart accumulator Walter H. Chapman, Erwin B. Knies 1981-01-27
4211172 Apparatus for connecting tow carts to a conveyor Walter H. Chapman, Erwin B. Knies, Robert E. Oberlin 1980-07-08