Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5656558 | Fire retardant safety glass | Werner Kiefer, Roland Leroux | 1997-08-12 |
| 5610108 | Reducing melt borosilicate glass having improved UV transmission properties and water resistance and methods of use | Eckhart Watzke, Thomas Kloss, Franz Ott | 1997-03-11 |