Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6360516 | Two stage hydraulic tongue swing mechanism | Melanie W. Harkcom, Steven J. Campbell, Thomas L. Stiefvater, Terry A. Young | 2002-03-26 |
| 6199355 | Control apparatus for rotatable gearbox on crop harvester | Thomas L. Stiefvater, Charles H. Hoffman, Larry Miller | 2001-03-13 |