Issued Patents 2005
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6948574 | Ultrasonic annular core bit | Till Cramer, Stefan Tichy, Walter Littmann, John Van Taack-Trakranen, Peter Alberg | 2005-09-27 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6948574 | Ultrasonic annular core bit | Till Cramer, Stefan Tichy, Walter Littmann, John Van Taack-Trakranen, Peter Alberg | 2005-09-27 |