Issued Patents 2021
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11141199 | Large shank polyaxial pedicle screw system | John E. Hammill, Sr. | 2021-10-12 |
| 11020150 | Polyaxial ball and socket fastener with a preloaded ring set | John E. Hammill, Sr. | 2021-06-01 |