Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5314480 | Patellar components | Robert N. Johnson | 1994-05-24 |
| 5169402 | Surgical instrument | — | 1992-12-08 |
| 4950297 | Knee prosthesis | Robert N. Johnson | 1990-08-21 |
| 4904269 | Hip joint prosthesis | Paulo Gallinaro, Giacomo Masse | 1990-02-27 |
| 4791919 | Surgical instruments | Robert N. Johnson | 1988-12-20 |
| 4568348 | Knee prosthesis | Robert N. Johnson | 1986-02-04 |