GB740520A
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Improvements in and relating to continuous regulating transformers
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GB671694A
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Improvements in and relating to stepless regulating transformers
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GB660247A
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Improved electrical contact device for transformers and the like
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GB637634A
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Improvements in and relating to stepless regulating transformers
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GB584660A
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Electrical contact devices for electrical transformers and the like
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GB550976A
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Transformer, choke, reactor and the like having adjustable reactance
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GB542265A
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Improvements in and relating to stray transformers
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GB534376A
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Improvements in and relating to shell-type transformers, chokes, reactors and the like
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GB534997A
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Improvements in and relating to electric contact devices
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GB510406A
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Transformer coils or the like
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GB491982A
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Adjustable stray transformer
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GB489095A
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Regulating transformer
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GB490831A
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Stray transformer for adjusting several circuits without causing humming
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