Issued Patents 2005
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6942194 | Gate valve | Roar Gravningen, Joern Syvertsen, Hege Lill Birkeland, Helge Hjallen | 2005-09-13 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6942194 | Gate valve | Roar Gravningen, Joern Syvertsen, Hege Lill Birkeland, Helge Hjallen | 2005-09-13 |