Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D304911 | Thermostat housing or the like | Edward Parker | 1989-12-05 |
| D304692 | Thermostat housing or the like | Edward Parker | 1989-11-21 |
| 4843084 | Thermostat control system | Edward Parker | 1989-06-27 |
| 4829447 | Bypass controller and bypass system | Edward Parker | 1989-05-09 |