Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4443151 | Automatic soil plug loader and feeder | Errol C. Armstrong, William A. Hanacek | 1984-04-17 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4443151 | Automatic soil plug loader and feeder | Errol C. Armstrong, William A. Hanacek | 1984-04-17 |