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Reduced rating T-connected autotransformer for converting...

Electric power conversion systems – Phase conversion without intermediate conversion to d.c. – With automatic voltage magnitude or phase angle control
Reexamination Certificate

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Reduced rating T-connected autotransformer for converting...

Electric power conversion systems – Phase conversion without intermediate conversion to d.c. – With automatic voltage magnitude or phase angle control
Reexamination Certificate

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Regulator circuit for independent adjustment of pumps in...

Electric power conversion systems – Phase conversion without intermediate conversion to d.c. – By dynamoelectric machine converter
Reexamination Certificate

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Ringer power generator circuit for carrier subscriber station te

Electric power conversion systems – Phase conversion without intermediate conversion to d.c. – By dynamoelectric machine converter
Patent

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Ringing signal supply

Electric power conversion systems – Phase conversion without intermediate conversion to d.c. – By dynamoelectric machine converter
Patent

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Ringing signal supply

Electric power conversion systems – Phase conversion without intermediate conversion to d.c. – By dynamoelectric machine converter
Patent

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Rotary dynamoelectric machine having high-resistance rotor

Electric power conversion systems – Phase conversion without intermediate conversion to d.c. – By dynamoelectric machine converter
Patent

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Rotary phase converter

Electric power conversion systems – Phase conversion without intermediate conversion to d.c. – By dynamoelectric machine converter
Patent

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Rotary phase converter

Electric power conversion systems – Phase conversion without intermediate conversion to d.c. – By dynamoelectric machine converter
Patent

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Rotary phase converter

Electric power conversion systems – Phase conversion without intermediate conversion to d.c. – By induction-type converter
Patent

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Rotary phase converter having circuity for switching windings to

Electric power conversion systems – Phase conversion without intermediate conversion to d.c. – By dynamoelectric machine converter
Patent

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Rotary phase generator and system

Electric power conversion systems – Phase conversion without intermediate conversion to d.c. – By dynamoelectric machine converter
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