Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8028772 | Internally dampened percussion rock drill | Glenn Patterson | 2011-10-04 |
| 7895948 | Buoyancy dissipater and method to deter an errant vessel | James H. Dupont, Richard D. Loehr | 2011-03-01 |