Issued Patents 1994
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5337470 | Method and apparatus for removing a nozzle insert from a steelmaking ladle | John P. Hoffman, Alvin M. Nestler, Edward T. Witek | 1994-08-16 |
| 5335896 | Nozzle insert for a steelmaking ladle | John P. Hoffman, Harry J. Beesley | 1994-08-09 |
| 5321875 | Well block centering tool | John P. Hoffman, Alvin M. Nestler | 1994-06-21 |