Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4904986 | IR flame amplifier | — | 1990-02-27 |
| 4890616 | Energy saving technique for battery powered inductor | — | 1990-01-02 |
| 4742248 | Random signal isolation circuit | Patrick Smith | 1988-05-03 |
| 4408175 | Self centering current responsive pickup means | Marvin D. Nelson | 1983-10-04 |
| 4382770 | Safe start fuel burner control system | — | 1983-05-10 |
| 4347974 | Temperature control system with night setback programming as a function of temperature conditioning load | Robert T. Ruminsky | 1982-09-07 |
| 4316577 | Energy saving thermostat | John T. Adams, Arlon D. Kompelien, Marvin D. Nelson | 1982-02-23 |
| 4256978 | Alternating polarity power supply control apparatus | — | 1981-03-17 |
| 4222046 | Abnormal condition responsive means with periodic high sensitivity | Stephen A. Haglund | 1980-09-09 |
| 4181957 | Means for correlation of digital display of a setpoint and an actual controlled value | — | 1980-01-01 |