DISTECH CONTROLS THERMOSTAT UNOCCUPIED PDF
Google Patents Electronically controlled programmable digital thermostatÄownload PDF Info Publication number US4298946A US4298946A US05/970,019 US97001978A US4298946A US 4298946 A US4298946 A US 4298946A US 97001978 A US97001978 A US 97001978A US 4298946 A US4298946 A US 4298946A Authority US United States Prior art keywords thermostat digital temperature digital processor heating Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google Patents US4298946A - Electronically controlled programmable digital thermostat US4298946A - Electronically controlled programmable digital thermostat