Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4631910 | Mower, especially for grass at airports | Hans H. Doyen | 1986-12-30 |
| 4632200 | Drive system on a carrier vehicle for various implements attached on the front or rear | Hans H. Doyen | 1986-12-30 |