Pietrobelli; Alejandro
Patent Applications and Registrations
Patent applications and USPTO patent grants for Pietrobelli; Alejandro.The latest application filed is for "method for making gravel filters in oil wells".
- Pietrobelli; Alejandro - Edo Zulia VE
- Pietrobelli; Alejandro - Tia Juana VE
| Patent | Date |
|---|---|
| Method for making windows in oil well casings Grant 8,225,870 - Pietrobelli , et al. July 24, 2 | 2012-07-24 |
| Method For Making Gravel Filters In Oil Wells App 20110017450 - Pietrobelli; Alejandro ; et al. | 2011-01-27 |
| Section mill for wells Grant 6,920,923 - Pietrobelli , et al. July 26, 2 | 2005-07-26 |
| Packing device for oil wells Grant 6,675,890 - Pietrobelli , et al. January 13, 2 | 2004-01-13 |
| Packing device for oil wells App 20030173074 - Pietrobelli, Alejandro ; et al. | 2003-09-18 |
| Underreamer with turbulence cleaning mechanism Grant 6,009,961 - Pietrobelli , et al. January 4, 2 | 2000-01-04 |
| Underreamer Grant 5,896,940 - Pietrobelli , et al. April 27, 1 | 1999-04-27 |
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