Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4432395 | Pipe part with socket provided with longitudinally extending channels | Joannes H. Beune | 1984-02-21 |
| 4428591 | Plastic pipe provided with a groove | Joannes H. Beune | 1984-01-31 |
| 4344461 | Pipe part with socket provided with longitudinally extending channels | Joannes H. Beune | 1982-08-17 |
| 4338716 | Plastic pipe provided with a groove | Joannes H. Beune | 1982-07-13 |