Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4842628 | Method of verifying a porous article made out of glass soot and furnace for carrying out the method | Karl Kreutzer, Fritz Simmat, Anton Steinkohl | 1989-06-27 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4842628 | Method of verifying a porous article made out of glass soot and furnace for carrying out the method | Karl Kreutzer, Fritz Simmat, Anton Steinkohl | 1989-06-27 |