Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5057015 | Dental handpiece having an arrangement to form compatible connections to differently designed rotatable joints | — | 1991-10-15 |
| 4900252 | Recognition system for tools insertable into dental treatment instruments | Johannes Liefke, Bernd Nickel, Josef Pabst | 1990-02-13 |