Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6503424 | Multicolored patterned floor covering and method for manufacture | Gerhard Graab, Klaus Heckel, Dieter Rischer, Thorsten Nahe | 2003-01-07 |
| 6221462 | Multicolored patterned floor covering and method for manufacture | Gerhard Graab, Klaus Heckel, Dieter Rischer, Thorsten Nahe | 2001-04-24 |