Kerrzelle fuer Zwecke der Lichtsteuerung,申请号DED580564D-传众专利搜索

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发明名称	Kerrzelle fuer Zwecke der Lichtsteuerung
摘要
申请公布号	DE580564(C)	申请公布日期	1933.07.13
申请号	DED580564D	申请日期
申请人	DR. HEINRICH GEFFCKEN;DR. HANS RICHTER	发明人
分类号	G02F1/07	主分类号	G02F1/07
代理机构		代理人
主权项
地址

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