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Class Information
Number: 236/78A
Name: Automatic temperature and humidity regulation > Motors > Electric > Relay > Plural control elements
Description:










Patents under this class:

Patent Number Title Of Patent Date Issued
7673809 Thermostat relay control Mar. 9, 2010
7464561 Unitary control for air conditioner and/or heat pump Dec. 16, 2008
7325749 Distributed solid state programmable thermostat/power controller Feb. 5, 2008
6109531 High reliability heating system Aug. 29, 2000
5592989 Electronic thermostat having high and low voltage control capability Jan. 14, 1997
5355938 Temperature control device Oct. 18, 1994
5304781 Two terminal line voltage thermostat Apr. 19, 1994
4919196 Three-stage mercury switch for operation between the heating and cooling mode Apr. 24, 1990
4775099 Thermostatic control apparatus for operation between the heating and cooling mode Oct. 4, 1988
4773472 Control device for a refrigerating apparatus of a vending machine Sep. 27, 1988
4530608 Baseline control for a differential scanning calorimeter Jul. 23, 1985
RE31502 In-line energization and de-energization of an external load in series with an external source of electricity in response to externally sensed parameters Jan. 17, 1984
4406399 Method of controlling an enamelling oven Sep. 27, 1983
4380317 Furnace control Apr. 19, 1983
4051231 Production of internal atmospheres for kilns Sep. 27, 1977
4004138 Method of and system for controlling temperature of continuous furnace Jan. 18, 1977
3981444 Method for starting a steam-heated heat exchanger by regulating the pressure of the heating-steam Sep. 21, 1976











 
 
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