Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6794597 | Wire electrode with a structured interface surface | Heinrich Groos, Bernd Barthel, Christoph Dietrich | 2004-09-21 |
| 6781081 | Wire electrode for spark erosion cutting | Heinrich Groos, Bernd Barthel, Christoph Dietrich | 2004-08-24 |