Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4236116 | Level control circuitry for two way communication system | Ronald Kopecki | 1980-11-25 |
| 4208631 | Digital pulsed DC remote-control system | James E. Hoffmann, Ronald Kopecki | 1980-06-17 |