Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4428431 | Perforable screen device for subterranean wells and method of producing multi-lobe zones | James Edward Porter | 1984-01-31 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4428431 | Perforable screen device for subterranean wells and method of producing multi-lobe zones | James Edward Porter | 1984-01-31 |