Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4834652 | Dental handpiece | — | 1989-05-30 |
| 4690641 | Contra-angle or turbine head of a dental handpiece | Michel Seigneurin | 1987-09-01 |
| 4673351 | Contra-angle for dental handpiece | Michel Seigneurin | 1987-06-16 |