Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5311911 | Tube plug for closing a defective heat exchanger tube, method for closing a defective heat exchanger tube and method for loosening a tube plug | Peter Krausser | 1994-05-17 |
| 4905546 | Twist-proof mechanical connecting assembly | Erich Katscher, Siegfried Forner, Gunter Rabe, Harald Hegenberger | 1990-03-06 |