Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7491239 | Interior insert ball and dual socket joint | Robert L. Doubler, John E. Hammill, Sr. | 2009-02-17 |
| 7195644 | Ball and dual socket joint | Robert L. Doubler, John E. Hamill | 2007-03-27 |
| 7115144 | Spinal implant | Robert L. Doubler | 2006-10-03 |
| 7083651 | Spinal implant | Robert L. Doubler | 2006-08-01 |
| 6695850 | Minimally invasive total hip replacement | — | 2004-02-24 |