Issued Patents 2011
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8048159 | Artificial intervertebral disc having a slotted belleville washer force restoring element | James D. Ralph | 2011-11-01 |
| 8038717 | Method of distracting vertebral bones | James D. Ralph, Thomas J. Errico | 2011-10-18 |
| 8029568 | Intervertebral spacer device having a slotted partial circular domed arch strip spring | James D. Ralph, Joseph P. Errico | 2011-10-04 |
| 7938837 | Femoral ring loader | James D. Ralph | 2011-05-10 |