Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4886247 | Ceramic brick retainer band for steel ladle | Donald B. Hoffman, Joseph J. Linhart | 1989-12-12 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4886247 | Ceramic brick retainer band for steel ladle | Donald B. Hoffman, Joseph J. Linhart | 1989-12-12 |