Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5161578 | Warm-up/changeover valve or proximity switch | Milton H. Coleman | 1992-11-10 |
| 4909308 | Changeover valve for a central air conditioning unit | Milton H. Coleman | 1990-03-20 |
| 4844149 | Warm-up/changeover valve or proximity switch | Milton H. Coleman | 1989-07-04 |
| 4756474 | Duct pressure powered air volume controller | David Tulowiecki | 1988-07-12 |
| 4576195 | Cartridge type control valve with inverted J-shaped inlet duct | — | 1986-03-18 |
| 4572411 | Valve assembly for a dispensing head | — | 1986-02-25 |
| 4454891 | Air gap drain module for use in a reverse osmosis system | Richard Smith | 1984-06-19 |
| 4249695 | Thermally actuated modulating valve, and assemblies and systems utilizing the same for providing temperature controlled heated water | — | 1981-02-10 |
| 4183466 | Thermally actuated phase change operated control valve for heat pump systems | — | 1980-01-15 |