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发明名称
摘要
申请公布号	UST896020(I4)	申请公布日期	1972.03.07
申请号	USD896020H	申请日期	1971.02.09
申请人		发明人
分类号	G03B17/20	主分类号	G03B17/20
代理机构		代理人
主权项
地址

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