Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4385813 | Phoropter | Friedrich Klein, Joachim Burmeister | 1983-05-31 |
| 4209021 | Apparatus for generating and measurement of defined forces for medical appliances | — | 1980-06-24 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4385813 | Phoropter | Friedrich Klein, Joachim Burmeister | 1983-05-31 |
| 4209021 | Apparatus for generating and measurement of defined forces for medical appliances | — | 1980-06-24 |