Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8839534 | Monolithic floor for hot slag bucket | Robert J. Willoughby | 2014-09-23 |
| 7818901 | Progressive linkage for excavator thumb | Christophor Napier, Robert J. Willoughby | 2010-10-26 |
| 5549440 | Fast-make coupler for attaching a work implement to a prime mover | Rifka Cholakon, Tracy C. Errera | 1996-08-27 |
| 4963071 | Coupler assembly between a prime mover and a work implement | Renee M. Z. Larwin, Richard D. Keen, Jr. | 1990-10-16 |