Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4363626 | Dental syringe | Manfred Schmidt, Hermann Leiberich, Helmut Pietschmann | 1982-12-14 |
| 4354838 | Foot controller for dental instruments or the like | Helmut Pietschmann | 1982-10-19 |