Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6171361 | High fluorine frits for continuous casting of metals | Manfred Beck | 2001-01-09 |
| 5512521 | Cobalt-free, black, dual purpose porcelain enamel glass | Vernon J. Grebe | 1996-04-30 |