Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5589127 | Method and apparatus for forming ribs with sideward projections in a plastic pipe, and a plastic pipe | Jyri Jarvenkyla, Dieter Scharwachter, Ake Johansson | 1996-12-31 |