Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4799938 | .alpha.-Al.sub.2 O.sub.3 abrasive material and method of preparing the same | Georg Gottschamel | 1989-01-24 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4799938 | .alpha.-Al.sub.2 O.sub.3 abrasive material and method of preparing the same | Georg Gottschamel | 1989-01-24 |