Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4848751 | Lance for discharging liquid nitrogen or liquid argon into a furnace throughout the production of molten metal | Sara Hornby-Anderson | 1989-07-18 |
| 4806156 | Process for the production of a bath of molten metal or alloys | Sara H. Anderson | 1989-02-21 |