US1299664A
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Electric furnace and transformer for use therewith.
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GB126744A
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Improvements in or relating to Electrical Transformers for Regulating or Varying the Voltage of the Current supplied therefrom.
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GB122431A
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Improvements in or relating to Electrical Transformers.
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GB191508106A
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Improvements in or relating to Protective Arrangements for Alternating Current Apparatus.
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GB191414030A
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Improvements in or relating to Electric Transformers.
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GB191012427A
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Improvements in or relating to Switch Apparatus suitable for use in Electrical Distribution Systems.
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CA224364A
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Electrical transformer arrangement
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CA220137A
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Reactance coil
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CA212607A
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Electrical transformer
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CA221498A
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Electric transformer arrangement
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CA199476A
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Electrical transformer
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