Issued Patents 2021
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11066896 | Expandable backup ring | Timothy D. Heiman, William Brooks Frederick | 2021-07-20 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11066896 | Expandable backup ring | Timothy D. Heiman, William Brooks Frederick | 2021-07-20 |