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Method and apparatus for heating and vulcanizing rubber and similar matter
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Method for heating and vulcanizing rubber and similar matter
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Spark gap apparatus
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Electric spark gap
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Method of baking or vulcanizing india-rubber or similar materials
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Improvements in or relating to high frequency electric induction furnaces
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Electric furnace
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Spark-gap oscillation producing apparatus especially suitable for electric high frequency furnaces
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Method and apparatus for producing spark discharges
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