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发明名称
摘要
申请公布号	BE711201(A)	申请公布日期	1968.08.23
申请号	BED711201	申请日期	1968.02.23
申请人		发明人
分类号	G03B21/11	主分类号	G03B21/11
代理机构		代理人
主权项
地址

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