Issued Patents 2002
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6343842 | Roller bit for tunnel-driving machines with segmented cutting rings | Klaus Sauer, Guenter Fennel, Ernst Heiderich, Reinhold Walter | 2002-02-05 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6343842 | Roller bit for tunnel-driving machines with segmented cutting rings | Klaus Sauer, Guenter Fennel, Ernst Heiderich, Reinhold Walter | 2002-02-05 |