Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4804689 | Process for holding and foaming thermoplastic polyphenylene sulphide articles and the resultant products | Erhard Tresper | 1989-02-14 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4804689 | Process for holding and foaming thermoplastic polyphenylene sulphide articles and the resultant products | Erhard Tresper | 1989-02-14 |