Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4833005 | Laminate of fiber-reinforced, crosslinked polypropylene | Paul Spielau, Werner Kuhnel | 1989-05-23 |
| 4826552 | Process for the production of multiple-layer moldings | Hans-Ulrich Breitscheidel, Paul Spielau | 1989-05-02 |