Issued Patents All Time
Showing 26–29 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5649602 | Wavy coulter | — | 1997-07-22 |
| 5452673 | Anhydrous ammonia knife | — | 1995-09-26 |
| 5366568 | Method of producing primarily tempered martensite steel | — | 1994-11-22 |
| D308974 | Spacer block for fertilizer tube on blade shank | William A. Secress | 1990-07-03 |