Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4855259 | Process of making ceramic moldings containing cordierite | Gunter Petzow | 1989-08-08 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4855259 | Process of making ceramic moldings containing cordierite | Gunter Petzow | 1989-08-08 |