Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 6533528 | Support frame for front attached implements of an operating machine and associated locating pins | Peter Theodorus Johannes Degen, Ralph E. Shirley | 2003-03-18 | $10,931,000 |
| 6424054 | Vehicle steering mode selection control | Marlin Onnen, Ralph E. Shirley, David Allen Larson | 2002-07-23 | $8,420,000 |