Issued Patents 2004
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D498543 | Paving element | Andreas Drost | 2004-11-16 |
| 6790544 | Multiple layer composite material consisting of cement-bound concrete and polymer-bound concrete and method for producing the same | — | 2004-09-14 |
| D486588 | Wall element | — | 2004-02-10 |
| D485370 | Paving element | Andreas Drost | 2004-01-13 |