Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4633847 | Multiple-blade internal-hole saw for sawing crystalline rods | Helmut Zauhar, Horst Stock | 1987-01-06 |
| 4513544 | Method of sawing crystalline rods, and multiple-blade internal-hole saw for carrying out the method | Helmut Zauhar, Horst Stock | 1985-04-30 |