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

Introduced: September 1968

Title

Titles differ between systems:

IPC: being of the type with a three-phase stator and a rotor fed by constant-frequency AC, e.g. selsyn, magslip

CPC: being the type with a three-phase stator and a rotor fed by constant-frequency AC, e.g. selsyn, magslip

Full Title

Full titles differ between systems:

IPC:

Electric signal transmission systems > using dynamo-electric devices > of which both rotor and stator carry windings > being of the type with a three-phase stator and a rotor fed by constant-frequency AC, e.g. selsyn, magslip

CPC:

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) > being the type with a three-phase stator and a rotor fed by constant-frequency AC, e.g. selsyn, magslip

No child classifications to compare. This is a leaf node in both IPC and CPC.