Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5656558 | Fire retardant safety glass | Peter Brix, Roland Leroux | 1997-08-12 |
| 5633090 | Lead-and cadmium-free glass composition for glazing, enameling and decorating glass | Erich Rodek, Friedrich Siebers | 1997-05-27 |