Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4212253 | Support device for a blast downpipe of a blast-furnace | Reni Aymard | 1980-07-15 |
| 4191410 | Device for assembling in particular two sections of a blast downpipe of a blast furnace | Rene Aymard | 1980-03-04 |