Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8469458 | Roller drill or roller bit | Ulrich Bechem | 2013-06-25 |
| 6139477 | Process for producing slots, grooves, and planar excavations | Ulrich Bechem, Klaus Bechem | 2000-10-31 |
| 5685615 | Eccentrically driven percussive tools for treating materials | Klaus Bechem, Ulrich Bechem | 1997-11-11 |
| 4815543 | Activated rock cutting assembly | Dieter Lenzen | 1989-03-28 |
| 4796713 | Activated earth drill | Ulrich Bechem, Klaus Bechem | 1989-01-10 |
| 4736987 | Rock cutting assembly | Dieter Lenzen | 1988-04-12 |