Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4298793 | Portable element for receiving, storing, displaying and outputting digital data, and a reservation device for use in a reservation system | Johannes H. A. M. Melis | 1981-11-03 |
| 4251801 | Mobile data communication system | Antonius N. C. Vereijken | 1981-02-17 |