Einrichtung zur geometrischen Lichtschwaechung,申请号DED554900D-传众专利搜索

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发明名称	Einrichtung zur geometrischen Lichtschwaechung
摘要
申请公布号	DE554900(C)	申请公布日期	1932.07.15
申请号	DED554900D	申请日期	1930.02.23
申请人	C. A. STEINHEIL SOEHNE	发明人	SCHOEN DR. MICHAEL
分类号	G01J3/02	主分类号	G01J3/02
代理机构		代理人
主权项
地址

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