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CPC Subgroup
G08C 19/46

of which both rotor and stator carry windings (having squirrel-cage rotor G08C19/40)

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Electric signal transmission systems (G08C17/00 takes precedence) > using dynamo-electric devices (operated by pulses G08C19/20) > of which both rotor and stator carry windings (having squirrel-cage rotor G08C19/40)

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  • G08C 19/48 being the type with a three-phase stator and a rotor fed by constant-frequency AC, e.g. selsyn, magslip