Issued Patents 2011
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8028755 | Quick lock wireline valve/blow-out preventor and methods for making and using same | David Trevor Darnell | 2011-10-04 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8028755 | Quick lock wireline valve/blow-out preventor and methods for making and using same | David Trevor Darnell | 2011-10-04 |