Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4369333 | Method and apparatus for enciphering and deciphering of information | Bruno Gemperle | 1983-01-18 |
| 4350844 | Encipering- and deciphering apparatus in the form of a typewriter | Peter Frutiger | 1982-09-21 |