Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4838340 | Continuous casting of fine grain ingots | Charles H. Entrekin | 1989-06-13 |
| RE32932 | Cold hearth refining | Charles H. Entrekin | 1989-05-30 |
| 4823358 | High capacity electron beam cold hearth furnace | Carlos E. Aguirre | 1989-04-18 |