Issued Patents 2003
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6550300 | Apparatus for producing annularly corrugated metal tubes | Ernst Hoffmann, Klaus-D. Jank, Robert Strohmeyer, Friedrich Harten | 2003-04-22 |
| 6513699 | Process for the production of metal pipes | Friedrich Harten | 2003-02-04 |
| 6509544 | Process for producing a metal tube of copper | Hans-Joachim Arntz, Friedrich Harten | 2003-01-21 |