Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5671813 | Method and apparatus for intermittent production of oil with a mechanical interface | — | 1997-09-30 |
| 5659142 | Process for the acquisition of an internal log of a parameter throughout a pipeline | Cesar Jose Moraes Del Vecchio | 1997-08-19 |
| 5622570 | Process for removing accumulated meltable matter in pipes by means of a heated travelling element | Carmem Silvia D. D. Lobato, Carlos Alberto Saliba | 1997-04-22 |