Issued Patents 2003
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6624739 | Access control system | — | 2003-09-23 |
| 6538560 | Keyless device for controlling access to automobiles and keyless method for checking access authorization | Volker Pretzlaff | 2003-03-25 |
| 6535744 | System for the spatial allocation of at least one transponder to the cells of a detection area, base station, and transponder | Holger Merk | 2003-03-18 |