Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4989320 | Knife | Rudolf Borkott, Gustav Schuhmacher, Fritz Gramm, Heinz Schueler | 1991-02-05 |
| 4905420 | Grinder with dust exhaust means | Gustav Schuhmacher, Fritz Gramm, Guenther Kloss | 1990-03-06 |
| 4700478 | Knife for cutting through the adhesive that fastens a window pane in place | Dieter Mezger, Georg Harsch | 1987-10-20 |