Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8038717 | Method of distracting vertebral bones | James D. Ralph, Stephen Tatar | 2011-10-18 |
| RE42545 | Polyaxial pedicle screw having a threaded and tapered compression locking mechanism | James D. Ralph, Joseph P. Errico | 2011-07-12 |