Issued Patents 2021
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11156316 | Pipe coupling | Stefan A. Lupke | 2021-10-26 |
| 11148342 | Air pressure control for corrugator | Stefan A. Lupke | 2021-10-19 |
| 11052593 | Die head and die tooling spider with spider legs having curved flow guides | Stefan A. Lupke | 2021-07-06 |