Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4581488 | Last number redial device | Robert B. Lawson, Jimmie R. Augustus, John Kardash | 1986-04-08 |
| 4547629 | Energy management circuit | — | 1985-10-15 |
| 4508939 | Last number redial device | Robert B. Lawson, Jimmie R. Augustus, John Kardash | 1985-04-02 |