Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4945904 | Orthopedic drill guide device | Carl William Bolton, Stanislaw L. Zukowski | 1990-08-07 |
| 4883048 | Apparatus and method for use in performing a surgical operation | Mark L. Purnell, William L. McCune, Michael E. Berkeley | 1989-11-28 |
| 4781182 | Apparatus and method for use in performing a surgical operation | Mark L. Purnell, William L. McCune, Michael E. Berkeley | 1988-11-01 |