Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7543651 | Non-elastomer cement through tubing retrievable safety valve | Roddie R. Smith, Nathaniel Wagner | 2009-06-09 |
| 7314091 | Cement-through, tubing retrievable safety valve | Nathaniel Wagner, Roddie R. Smith | 2008-01-01 |