|
US1825100A
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Electric control apparatus
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Remote control apparatus
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Improvements in or relating to electric motor control systems
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Improvements in or relating to electro-dynamic braking apparatus for use in electric vehicles
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Control of direct-current motors
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Improvements in apparatus for the regenerative control of electric motors
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Electric control apparatus
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Improvements in or relating to dynamo-electric machines
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Improvements in or relating to dynamo-electric machines
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