Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6820723 | Adapter for connection between vehicle and ladder | — | 2004-11-23 |
| 6702047 | Drill bit for drilling rock | — | 2004-03-09 |
| 6550555 | Drill bit for drilling rock | Franz Krenn | 2003-04-22 |
| 6021857 | Drill bit | Rudi Birk, Werner Ferstl, Walter Lempach | 2000-02-08 |
| 5116659 | Extrusion process and tool for the production of a blank having internal bores | Rudolf Glatzle, Thomas Schopf, Michael Schretter | 1992-05-26 |