Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5701046 | Process for the production of multi-layered brushes and brushes obtained by the process | Lothar Biering, Erhard Grohs, Klaus Groht, Conrad Reynvaan, Horst Siegmund +2 more | 1997-12-23 |