Electrical transmission of light by phase control,申请号US19270205396-传众专利搜索

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发明名称	Electrical transmission of light by phase control
摘要
申请公布号	US1860341(A)	申请公布日期	1932.05.24
申请号	US19270205396	申请日期	1927.07.13
申请人	HAMMOND JR JOHN HAYS	发明人	JR. JOHN HAYS HAMMOND,
分类号	H04N7/045	主分类号	H04N7/045
代理机构		代理人
主权项
地址

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