Match Document Document Title
3578950 ELECTRIC HEAT SEQUENCE CONTROL  
When the thermostat calls for heat the motor starts and rotates the cam bank to start the fan first and then place the heaters on the line in sequence. After all heaters are on the line the motor...
3579264 REVERSIBLE PROGRAMMER FOR ELECTRIC CIRCUITS  
An improved reversible programmer having a regulated control sequence in both a forward and reverse direction. The programmer includes a plurality of actuatable control switches and a generally...
3567908 DRIVE CIRCUITS FOR SOLID STATE CLOCK DISPLAYS  
The disclosed solid state clock drive circuit comprises cascaded ring counters, whose stages comprise at least one heater element and one thermistor. A bistable switch, in response to timing...
3566078 WARMUP DEMAND LIMITER FOR A BOILER OR THE LIKE  
A demand limiter is operatively interposed between the system actuator of a control system and a predetermined number of a plurality of load elements. In the period following system actuation...
3551646 DEMAND-LIMITING ELECTRICAL HEATING SYSTEM  
3517162 METHOD AND APPARATUS FOR CONTROLLABLY HEATING FLUID  
3510627 HOT WATER SUPPLY APPARATUS  
3502843 ELECTRIC WATER HEATING UNIT  
3496337 SEQUENCING CIRCUIT FOR POWER CONSUMING DEVICES  
3496331 ELECTRIC DEFROSTING FACILITY FOR ROTATING BLADE SYSTEMS  
3489882 SWITCH SEQUENCE CONTROL FOR HEATING ELEMENTS AND THE LIKE  
3475588 DEFROSTING AND DEICING WINDOW ASSEMBLY  
3453415 AIRCRAFT DEICING SYSTEM  
3435189 THERMOSTATIC CONTROL SYSTEM FOR WATER HEATER TANKS OR THE LIKE  
3431395 ELECTRIC WATER HEATER CIRCUIT  
3428784 MODULATING CONTROL APPARATUS  
3426176 WELDMENT AND PROCESS FOR WELDING THIN SHEET METALS  
3354257 Furnace heating apparatus  
3353002 Electric water heater circuit  
3353000 Cast vessel for an electric hot water heating boiler  
3351739 Control system for electrically heated boiler  
3329800 Water heating apparatus  
3297857 Heating control system  
3283127 Control circuit  
3275800 Electric heater for use in a sauna bath  
3272154 Compact self-unloading baking oven  
3257544 Heating circuits  
3249740 Water heater and control therefor  
3243576 Broiler attachment for frying pans  
3242978 Electric control apparatus for a plurality of temperature-affecting units  
3235709 Thermostatically controlled electric cooking plate  
3215348 Multi-stage temperature control apparatus  
3214539 Thermal cycling switch mechanism having bake and broil positions  
3202798 Domestic electric appliance  
3201564 Control system for electric cooking ovens  
3196254 Heater control systems  
3180999 Circuit for controlling alternating currents  
3173432 Washing machine  
3172997 Electric heating systems  
3172996 Electric heating systems  
3171950 Electrical room heater-ventilator control arrangements  
3165625 Heating-ventilating device  
3161758 Sequence control for electric circuits  
3152240 Electrically heated vaporizing device  
3128362 Heater control system  
3122316 Plural stage temperature control  
3119918 Electric heater  
3112387 Frozen blood plasma defroster  
3108173 Infra-red heating apparatus  
3094604 Vehicle electric heating system