Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4808473 | Polyamide-imide aromatic sulfone polymer films | — | 1989-02-28 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4808473 | Polyamide-imide aromatic sulfone polymer films | — | 1989-02-28 |