Description: 321 / (12) Current Conversion (E.G. Rectification, Derectification) (34) D.C. to A.C. Conversion (e.g., Derectification, Inverter) (41) Semiconductor Type Converter (42) S.C.R. Type Converter (43) With Polyphase Output (45) With Phase Control Means

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321 / 12-> 34-> 41-> 42-> 43-> 45

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