Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4842629 | Method for producing buried regions of raised refractive index in a glass member by ion exchange | Peter Clemens, Herbert Michel | 1989-06-27 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4842629 | Method for producing buried regions of raised refractive index in a glass member by ion exchange | Peter Clemens, Herbert Michel | 1989-06-27 |