Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4838340 | Continuous casting of fine grain ingots | Howard R. Harker | 1989-06-13 |
| RE32932 | Cold hearth refining | Howard R. Harker | 1989-05-30 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4838340 | Continuous casting of fine grain ingots | Howard R. Harker | 1989-06-13 |
| RE32932 | Cold hearth refining | Howard R. Harker | 1989-05-30 |