Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4484025 | System for enciphering and deciphering data | Wolfgang Bitzer | 1984-11-20 |
| 4450320 | Dialing device with calling number and identification memory and method for using same | Paul Lissner | 1984-05-22 |