Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4864805 | System for supporting a working unit | Joseph P. Hager | 1989-09-12 |
| 4854112 | Turf maintenance apparatus | Walter J. Petersen, Michael N. Zenner | 1989-08-08 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4864805 | System for supporting a working unit | Joseph P. Hager | 1989-09-12 |
| 4854112 | Turf maintenance apparatus | Walter J. Petersen, Michael N. Zenner | 1989-08-08 |