Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6290083 | Heating system for tanks for assembly for supporting the floating roofs of tanks for storing liquids | Aldyr Witter | 2001-09-18 |
| 6273287 | Vacuum-relief valve for the floating roofs of tanks for storing liquids | Aldyr Witter | 2001-08-14 |
| 6241924 | Method for inverting the convex configuration of a liquid-product storage-tank bottom by applying hardenable material having plastic properties | Aldyr Witter | 2001-06-05 |