Power-regulating device,申请号US19380195594-传众专利搜索

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发明名称	Power-regulating device
摘要
申请公布号	US2197934(A)	申请公布日期	1940.04.23
申请号	US19380195594	申请日期	1938.03.12
申请人	RADIO CORPORATION OF AMERICA	发明人	KOCH WINFIELD R.
分类号	G05F1/66	主分类号	G05F1/66
代理机构		代理人
主权项
地址

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