Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5467631 | Method for manufacturing a plug-type chamber used in the cascade drawing of tubes, and device for implementing the method | Friedrich Eberts | 1995-11-21 |
| 5026436 | Process for the production of tubular bodies | — | 1991-06-25 |
| 4919728 | Method of manufacturing nonmagnetic drilling string components | Heinz Kohl, Alois Puchl | 1990-04-24 |