Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5765452 | Method for improving the endurance of a blade base of a disc chipper, a blade base of a disc chipper and a disc chipper | Timothy P. Nettles, Hannu Tahkanen, Arvo Jonkka, Pauli Vienola, Antti Tohkala | 1998-06-16 |
| 4658551 | Caisson of a stack of caissons constituting the lateral walls of an underground room such as particularly a cellar | — | 1987-04-21 |
| 4607467 | Underground room such as notably a cellar | — | 1986-08-26 |