GB418637A
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Regulating device for dynamo electric machines
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GB337699A
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Alternating current generator with modulation frequency
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US1780702A
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Constant-speed multifrequency electrical generating apparatus
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GB322347A
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Constant speed multi-frequency electrical generating apparatus
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US1618411A
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Electrical frequency-multiplying system
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GB241167A
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Improvements in electrical frequency multiplying systems, more especially for wireless signalling
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GB219862A
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Improvements in or relating to systems for multiplying frequency by means of electric transformers
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GB202277A
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Methods of improving the efficiency of frequency multiplying transformers
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GB207781A
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Improvements in wireless and like signalling
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US1545040A
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Multiplying transformer
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US1545041A
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Circuit arrangement for frequency-multiplying transformers
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GB201845A
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Improvements in electrical condensers
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GB206074A
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Improvements in and relating to antennae for wireless signalling
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GB203223A
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Improvements relating to speed regulators for electric motors
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GB204558A
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Improvements relating to electric speed governors
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GB194365A
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Improvements in or relating to wireless telegraphy antennae
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US1587512A
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High-frequency transformer
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GB188551A
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Improvements in or relating to systems for transforming the frequency of electric currents
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GB189350A
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Improvements in or relating to electric condensers
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GB189349A
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Improvements in or relating to high frequency transformers
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