Patents per Year
Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4638147 | Microprocessor controlled through-flow electric water heater | Andrew Keatley, William S. Wright | 1987-01-20 |
| 4462540 | Control system for an air temperature changing unit | — | 1984-07-31 |
| 4369377 | Current control device | — | 1983-01-18 |