Phase control system,申请号US19290370696-传众专利搜索

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发明名称	Phase control system
摘要
申请公布号	US1964522(A)	申请公布日期	1934.06.26
申请号	US19290370696	申请日期	1929.06.13
申请人	LEWIS HAROLD M	发明人	LEWIS HAROLD M.
分类号	H03C1/60	主分类号	H03C1/60
代理机构		代理人
主权项
地址

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