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Automatic telephone dialing apparatus
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Telephone dialing apparatus
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Battery charging control responsive to rate of rise of battery voltage
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Control system for battery charging
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Electronic timer
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Thermal relay with improved heater arrangement
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Automatic dialing apparatus
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Improvements in or relating to thermal relays
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Electro-thermal relay with heat augmentation
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Electrothermal device for cyclic contact operation
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Sensing of acceleration
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Thermostat having motion amplification and shock resistance
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Vibration suppression
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Time-delay relay
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Electro-thermal control device
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