Voltage and speed regulating apparatus,申请号US19540473376-传众专利搜索

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发明名称	Voltage and speed regulating apparatus
摘要
申请公布号	US2847634(A)	申请公布日期	1958.08.12
申请号	US19540473376	申请日期	1954.12.06
申请人	POWELL RIVER COMPANY LIMITED	发明人	WALKER CHARLES W. E.;JULSON OLIVER M.
分类号	H02P9/32	主分类号	H02P9/32
代理机构		代理人
主权项
地址

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