Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4828609 | Method to protect the surface of metal in vertical melting furnaces | Jocelyne McGeever, Casey McGeever, Greg Carr | 1989-05-09 |
| 4806156 | Process for the production of a bath of molten metal or alloys | Noel F. Lutgen | 1989-02-21 |