Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10928084 | Multi-function thermostat with intelligent supply fan control for maximizing air quality and optimizing energy usage | Michael J. Ajax, Joseph R. Ribbich | 2021-02-23 |
| 10837665 | Multi-function thermostat with intelligent ventilator control for frost/mold protection and air quality control | Michael J. Ajax, Joseph R. Ribbich | 2020-11-17 |
| 5410816 | Tile, angle-cutting gauge | — | 1995-05-02 |
| 5361508 | Tile, angle-cutting gauge | — | 1994-11-08 |
| 5207730 | Expansion tube puller | — | 1993-05-04 |
| 5068930 | Invalid's bathtub seat | — | 1991-12-03 |