Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4246847 | Bumper assisted for cart accumulator | Walter H. Chapman, David E. Hiland | 1981-01-27 |
| 4211172 | Apparatus for connecting tow carts to a conveyor | Walter H. Chapman, David E. Hiland, Robert E. Oberlin | 1980-07-08 |