Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4834284 | Hot water control | — | 1989-05-30 |
| 4620667 | Hot water heating system having minimum hot water use based on minimum water temperatures and time of heating | Oscar Dufau, Frederick Blau, Jr. | 1986-11-04 |
| 4522333 | Scheduled hot water heating based on automatically periodically adjusted historical data | Frederick Blau, Jr., John Michael Gross | 1985-06-11 |
| 4394742 | Engine generated waveform analyzer | Marvin R. Crummer, Kenneth S. Gold, David G. Johnson, Edmond R. Pelta | 1983-07-19 |