Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4877572 | Process for the production of PBT carpet yarn | Ulrich Mirwaldt, Dietmar Wandel | 1989-10-31 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4877572 | Process for the production of PBT carpet yarn | Ulrich Mirwaldt, Dietmar Wandel | 1989-10-31 |