Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4842071 | Process for the selective reduction of water inflows in oil or gas producing wells | Norbert Kohler | 1989-06-27 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4842071 | Process for the selective reduction of water inflows in oil or gas producing wells | Norbert Kohler | 1989-06-27 |