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3066214 Electric water heater  
3062943 Combination manual and automatic time and temperature control system  
3059084 Electric thermostat  
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3007024 Electric heating system  
2993106 Heating control system  
2958755 Electronic sequencer control circuits  
2932715 Electric range  
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2924695 Electric furnace control method  
2921173 Warming blanket control  
2920175 Constant temperature chamber, in particular a crystal oven  
2916598 Fuel oil pre-heater  
2910567 Thin radiating hot pads  
2906845 Parallel heating unit wattage controller system  
2889442 Domestic appliance  
2883508 Range  
2882383 Space heating system and apparatus  
2848588 Control system for electric heating  
2846556 Temperature controlling apparatus  
2844704 Combination range and hot water heater  
2832878 Electric cooking appliances  
2825789 Control apparatus  
2825791 House heating unit using electrical heating elements novelly organized and controlled  
2810811 Time controlled apparatus with electromechanical relay  
2798929 Control apparatus  
2782291 Thermostatic heating control systems