Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7988380 | Seal hub for protection of seal and bearing from metal fragments due to shearing of a shock device | David M. DeChristopher | 2011-08-02 |
| 7942748 | Annular groove in a shock protection device | David M. DeChristopher | 2011-05-17 |