Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5196075 | Method for modifying and thereby improving the corrosion resistance and hardness of workpieces of ferritic steel | Knut Jansen, Andreas Franziskus | 1993-03-23 |
| 4947594 | Device for adjusting and fixedly securing window frames and door cases or the like in wall openings | Thomas Theobald, Manfred Kross | 1990-08-14 |
| 4926719 | Supplementary device for inserting screws by means of a power-driven screw driver | Manfred Kross | 1990-05-22 |