Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4679722 | Method and apparatus for welding two pipes along their line of penetration | Werner Flindt | 1987-07-14 |
| 4480821 | Apparatus for performing a work function on a tubular workpiece | Wilfried Bangert, Hans Hacobs | 1984-11-06 |
| 4323223 | Apparatus for forming a closed cut surface in a wall of a workpiece | — | 1982-04-06 |