Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4730471 | Apparatus for electromagnetic locking on a lock cylinder for a mechanical/electronic locking system | Arno Kleinhany | 1988-03-15 |
| 4686358 | Programmable electronic-mechanical reversing flat key interactively communicatable with data processing means | Walter Gutmann | 1987-08-11 |
| 4658105 | Electrical contact means for a lock cylinder with an electronic/mechanical key | — | 1987-04-14 |
| 4334738 | Method of perimetric examination of visual fields | — | 1982-06-15 |
| 4334739 | Method of graphically displaying the results of repeated perimetric examination of visual fields | — | 1982-06-15 |