Indicating device,申请号US19340755337-传众专利搜索

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发明名称	Indicating device
摘要
申请公布号	US2159749(A)	申请公布日期	1939.05.23
申请号	US19340755337	申请日期	1934.11.30
申请人	RADIO CORPORATION OF AMERICA	发明人	NEWMAN WILLIAM E.
分类号	H03J1/08	主分类号	H03J1/08
代理机构		代理人
主权项
地址

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