Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5427180 | System for tensioning risers by means of articulated grid | Andre J. dePaiva Leite, Edwal F. Paiva Filho, David Cardellini | 1995-06-27 |
| 5363696 | Method and arrangement for oil well test system | David Cardellini, Michael P. Biencourt, John A. Haeber, John A. DeVires | 1994-11-15 |
| 5252004 | Rod accumulator riser tensioning cylinder assembly | Bryan V. Butler | 1993-10-12 |