Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4579273 | Welded pipe connection | Heinz Gross, Martin Henning | 1986-04-01 |
| 4467635 | Leak detection in heat exchanger tubes and their tube sheet connections | Roger Eriksson | 1984-08-28 |
| 4247033 | Method of and device for producing multi-layer pipes | Jurgen Engel, Heinz Gross, Martin Henning, Werner Wennemann | 1981-01-27 |