Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4890356 | Hinge for the connection of the shaft of a temple with a hinge piece of spectacle frames as well as a process for the production of such a hinge | Gunther Czech | 1990-01-02 |
| 4795247 | Process for fitting a spectacle frame and device and adaptive end piece for performing the process | Stephan Volk | 1989-01-03 |