Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6298918 | System for lifting petroleum by pneumatic pumping | Zadson De Almeida Franco | 2001-10-09 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6298918 | System for lifting petroleum by pneumatic pumping | Zadson De Almeida Franco | 2001-10-09 |