Light meter device,申请号US19580749844-传众专利搜索

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发明名称	Light meter device
摘要
申请公布号	US2972930(A)	申请公布日期	1961.02.28
申请号	US19580749844	申请日期	1958.07.21
申请人	NORWOOD DONALD W	发明人	NORWOOD DONALD W.
分类号	G01J1/42	主分类号	G01J1/42
代理机构		代理人
主权项
地址

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