Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5640914 | Debris manipulating and clearing assembly for clearing crop residue from soil | — | 1997-06-24 |
| 5623997 | Soil zone-builder coulter closer/tiller | William C. Maenle, David R. Smith | 1997-04-29 |