Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4230912 | Dial pulse sensor and repeater circuit | Richard M. Rovnyak | 1980-10-28 |
| 4190745 | Call for service and continuity sensor circuit | Julius Jusinskas, Jr., Richard M. Rovnyak | 1980-02-26 |