Issued Patents 2003
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6666271 | Curved flapper and seat for a subsurface saftey valve | Robert Jancha | 2003-12-23 |
| 6575249 | Apparatus and method for locking open a flow control device | — | 2003-06-10 |
| 6513594 | Subsurface safety valve | David McCalvin | 2003-02-04 |