Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10641707 | Systems and methods for distinguishing optical signals of different modulation frequencies in an optical signal detector | Robert E. Heinz, David Opalsky, Jason F. Rhubottom | 2020-05-05 |
| 9915613 | Systems and methods for distinguishing optical signals of different modulation frequencies in an optical signal detector | Robert E. Heinz, David Opalsky, Jason F. Rhubottom | 2018-03-13 |
| 8718948 | Systems and methods for distinguishing optical signals of different modulation frequencies in an optical signal detector | Robert E. Heinz, David Opalsky, Jason F. Rhubottom | 2014-05-06 |
| 4311497 | Method and apparatus for heat pump system protection | — | 1982-01-19 |
| 4253130 | Method and apparatus for heat pump system protection | — | 1981-02-24 |