Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4852614 | Shut-off device which can be inserted into a pipeline | Trond V. Johansen, Ola Ruch, Ludvig Naess, Robert A. Weber, Horst Porner +3 more | 1989-08-01 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4852614 | Shut-off device which can be inserted into a pipeline | Trond V. Johansen, Ola Ruch, Ludvig Naess, Robert A. Weber, Horst Porner +3 more | 1989-08-01 |