Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4333803 | Method and apparatus for controlling the heat balance in aluminum reduction cells | Warren E. Haupin | 1982-06-08 |
| 4188267 | Method and apparatus for measuring the integrity of an electrolytic cell lining | Warren E. Haupin | 1980-02-12 |