Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6948574 | Ultrasonic annular core bit | Till Cramer, Adrian Kauf, Stefan Tichy, Walter Littmann, John Van Taack-Trakranen | 2005-09-27 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6948574 | Ultrasonic annular core bit | Till Cramer, Adrian Kauf, Stefan Tichy, Walter Littmann, John Van Taack-Trakranen | 2005-09-27 |