Issued Patents 2004
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6686752 | Wear indicator for refractory linings | William L. Heumann, Frank J. Elvin, Russell J. Lewis, Edwin D. Tenney, Joseph A. Urban +1 more | 2004-02-03 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6686752 | Wear indicator for refractory linings | William L. Heumann, Frank J. Elvin, Russell J. Lewis, Edwin D. Tenney, Joseph A. Urban +1 more | 2004-02-03 |