Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6508977 | Reinforced refractory shaft design for fluxing molten metal | C. Edward Eckert | 2003-01-21 |
| 5078595 | Carbon flue wall and method of making | Peter Frazier | 1992-01-07 |
| 4975049 | Refractory block for rotary kiln | Peter Frazier, Richard C. Lipp | 1990-12-04 |