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发明名称	Okular
摘要
申请公布号	DE570499(C)	申请公布日期	1933.02.16
申请号	DED570499D	申请日期	1930.01.14
申请人	LUDWIG BERTELE	发明人
分类号	G02B25/00	主分类号	G02B25/00
代理机构		代理人
主权项
地址

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