Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5391853 | Process for the roller seam welding of tanks and roller seam resistance-welding machine for carrying out the process | Tomislav Matievic, Manfred Schlemmer | 1995-02-21 |
| 5348042 | Ceramic-plate flow-control valve | Friedrich Wagner | 1994-09-20 |
| 5022631 | Flow-control and shutofff valve | Friedrich Wagner | 1991-06-11 |
| 5014736 | Shut-off and control valve | Harald Korfgen, Heinz Hirsch, Vinzenz Grendel, Friedrich Wagner | 1991-05-14 |