Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4819267 | Solid state key for controlling access to computer systems and to computer software and/or for secure communications | Richard D. Freeman, James M. Lyon | 1989-04-04 |
| 4609777 | Solid state key for controlling access to computer software | — | 1986-09-02 |
| 4599489 | Solid state key for controlling access to computer software | — | 1986-07-08 |
| 4390944 | System for controlling access to a common bus in a computer system | William L. Quackenbush, Stephen Porter | 1983-06-28 |