Speed control of induction motors by means of mercury vapour frequency changers,申请号GB19330003708-传众专利搜索

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发明名称	Speed control of induction motors by means of mercury vapour frequency changers
摘要
申请公布号	GB397768(A)	申请公布日期	1933.08.31
申请号	GB19330003708	申请日期	1933.02.07
申请人	THE ENGLISH ELECTRIC COMPANY LIMITED;JOHN EARNSHAW CALVERLEY;REGINALD DONAHOE BALL	发明人
分类号	H02M5/27	主分类号	H02M5/27
代理机构		代理人
主权项
地址

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