Issued Patents 2004
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6708773 | Method and apparatus for an aerator with differential, steering assist and power lifting | John Kinkead, Donavon D. Kotula, Thomas E. Isaman, Robert C. Brophy | 2004-03-23 |