Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4673434 | Using a rotary device for treating molten metal | Christopher J. Withers | 1987-06-16 |
| 4634105 | Rotary device for treating molten metal | Christopher J. Withers | 1987-01-06 |