Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6615922 | Aluminum riser apparatus, system and method | Hans Herman Jacques Deul, Mikhail Yakovlevich Gelfgat | 2003-09-09 |
| 6415867 | Aluminum riser apparatus, system and method | Hans Herman Jacques Deul, Mikhail Yakovlevich Gelfgat | 2002-07-09 |