Issued Patents 2005
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6851477 | Curved flapper with angle variant seat for a subsurface safety valve | Thomas G. Hill, Jr., Robert Jancha | 2005-02-08 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6851477 | Curved flapper with angle variant seat for a subsurface safety valve | Thomas G. Hill, Jr., Robert Jancha | 2005-02-08 |