Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8075295 | Alignable cooling plug for extruder | Manfred A. A. Lupke | 2011-12-13 |
| 7976753 | Method of forming corrugated pipe with a pipe spigot seal seat | Manfred A. A. Lupke | 2011-07-12 |