Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7594543 | Method and apparatus for production in oil wells | Marcelo de Albuquerque Lima Goncalves, Alcino Resende De Almeida | 2009-09-29 |
| 7249634 | Apparatus for production in oil wells | Marcelo de Albuquerque Lima Goncalves, Alcino Resende De Almeida | 2007-07-31 |