Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5493612 | Secure communication keying system | William E. Klund, Woodrow H. Littrell, Robert D. Isaak | 1996-02-20 |
| 4203164 | Secure sonar communication system | Robert D. Isaak, William E. Klund, Woodrow H. Littrell | 1980-05-13 |