Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4927442 | Method of producing open-pore sintered glass filters and product | Norbert Greulich, Werner Kiefer | 1990-05-22 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4927442 | Method of producing open-pore sintered glass filters and product | Norbert Greulich, Werner Kiefer | 1990-05-22 |