Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6109591 | Wide range proportional flow control valve | Robert Schwartz | 2000-08-29 |
| 5787991 | Adjustable angle ridger for a cultivator | — | 1998-08-04 |
| 5573072 | Operating position adjustment levers for cultivator tools | James R. Evans | 1996-11-12 |
| 4974683 | Ridge tillage attachment for planters | John A. Hanig, Edward H. Smit, Steven E. Sukup | 1990-12-04 |
| 4749930 | High speed positive feed drill motor open loop control system | Paul E. Faville | 1988-06-07 |