Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6219946 | Power shovel with dipper door snubber and/or closure assembly | — | 2001-04-24 |
| 5815960 | Retarding mechanism for the dipper door of a mining shovel | — | 1998-10-06 |
| 5471772 | Fairlead mechanism with synchronized sheaves | Robert H. Blaszynski | 1995-12-05 |
| 5472134 | Weld joint container | Lyle P. Gunnell, Roger A. Heins | 1995-12-05 |