Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6959652 | Table or workbench covering | Gerhard Graab | 2005-11-01 |
| 6695999 | Method of making an electrically conductive floor covering | Gerhard Graab, Peter Platzer, Ralf Möller | 2004-02-24 |
| 6251321 | Process of making a homogeneous floor covering | Gerhard Graab, Klaus Heckel | 2001-06-26 |
| 5049431 | Multi-colored floor covering and method of manufacturing it | Klaus Heckel, Gerhard Graab | 1991-09-17 |
| 4670075 | Method of manufacturing light-colored electrically-conductive floor covering | Klaus Heckel, Gerhard Graab | 1987-06-02 |