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Induction furnace
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Ground detector
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Voltage regulating system
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Control means for induction furnaces
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Improvements in or relating to heating by electromagnetic induction
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Induction furnace for variable heat patterns
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Improvements in or relating to electric induction furnaces
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Casting apparatus
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Improvements in electric arc discharge apparatus
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Coreless induction furnace for melting metals
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Discharge gap
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Induction heating method
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Transformer
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Improvements in or relating to transformers
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Induction heater
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Transformer
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Induction heater
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Muffle inductor electric furnace
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Furnace lining protection
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Discharge gap
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