Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8225870 | Method for making windows in oil well casings | Alejandro Pietrobelli | 2012-07-24 |
| 6920923 | Section mill for wells | Alejandro Pietrobelli | 2005-07-26 |
| 6675890 | Packing device for oil wells | Alejandro Pietrobelli | 2004-01-13 |
| 6009961 | Underreamer with turbulence cleaning mechanism | Alejandro Pietrobelli | 2000-01-04 |
| 5896940 | Underreamer | Alejandro Pietrobelli | 1999-04-27 |