Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6739151 | Method of producing a quartz glass tube and drill body for performing the method | Rainer Schleich | 2004-05-25 |
| 5643069 | Drill for drilling brittle materials | Uwe Christiansen, Andreas Schultheis | 1997-07-01 |