Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5907965 | Device for expanding a tube | — | 1999-06-01 |
| 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 | Alexander Hummeler | 1994-05-17 |