Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6663825 | Method and apparatus for installing or replacing a furnace tap hole insert | Louis A. Grant, Jr. | 2003-12-16 |
| 5294318 | Crustbreaking assembly for aluminum electrolysis cells | Louis A. Grant, Jr. | 1994-03-15 |