Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8602120 | Soil working device | — | 2013-12-10 |
| 7908983 | Sowing device for lawns | — | 2011-03-22 |
| 6874307 | Device for maintaining grass fields | — | 2005-04-05 |
| 6003613 | Apparatus for aerating a ground layer | — | 1999-12-21 |
| 5667019 | Soil treating device | — | 1997-09-16 |
| 5396962 | Device for making sowing furrows in a lawn | — | 1995-03-14 |
| 5076367 | Soil working device | — | 1991-12-31 |
| 4891888 | Auxiliary tool for carefully levelling finishing floors | Cornelius H. Maria De Bree | 1990-01-09 |