Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4445354 | Procedure and equipment for the manufacture of pipes with external and internal diameters varying in stages | Gerd Pfeiffer, Horst Stinnertz | 1984-05-01 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4445354 | Procedure and equipment for the manufacture of pipes with external and internal diameters varying in stages | Gerd Pfeiffer, Horst Stinnertz | 1984-05-01 |