Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4607137 | Method of distributing and utilizing enciphering keys | Cornelis J. A. Jansen, Pieter Van Der Vlist, Frederik Hafkamp | 1986-08-19 |
| 4465153 | Method of coding and decoding messages | Antonius C. J. Van Den Ende | 1984-08-14 |