Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6237256 | Balance-enhanced insert for footwear | Stephen D. Perry, William E. McIlroy | 2001-05-29 |
| 4759769 | Artificial spinal disc | Thomas P. Hedman, John Kostuik, Geoffrey Roy Fernie | 1988-07-26 |