Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4606154 | Flexible and extensible coated abrasive material | Lotte Herrmann, Armin Steiner | 1986-08-19 |
| 4364746 | Abrasive material | Diethelm Bitzer, Jost Kramis | 1982-12-21 |
| 4317660 | Manufacturing of flexible abrasives | Jost Kramis | 1982-03-02 |