Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12286783 | Gutter system, cover unit and securing element | — | 2025-04-29 |
| 12049750 | Gutter system | Michael Muller, Michael Sieber | 2024-07-30 |
| 9004809 | Manhole cover | — | 2015-04-14 |
| 7524133 | Surface water drainage system | Heino Messerschmidt, Michael Sieber, Markus Blaschke | 2009-04-28 |
| 7458745 | Drainage channel | Rainer Stolley, Rino Saredi | 2008-12-02 |
| 7059804 | Drainage device | Michael Sieber, Markus Blaschke, Heino Messerschmidt | 2006-06-13 |