Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4889875 | Phenolic resin foams of high filler content and their use as insulation | Josef Tiroux, Franz Weissenfels | 1989-12-26 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4889875 | Phenolic resin foams of high filler content and their use as insulation | Josef Tiroux, Franz Weissenfels | 1989-12-26 |