Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4535882 | Method and apparatus for arranging cast-iron pipes in odd number stacks | Roger Malivoir | 1985-08-20 |
| 4491214 | Method and apparatus for handling cast iron pipes with a view to their being turned head to tail | Roger Malivoir | 1985-01-01 |
| 4441847 | Method and apparatus for producing bundles of cast iron pipes | Roger Malivoir | 1984-04-10 |