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发明名称
摘要
申请公布号	FR2024521(A1)	申请公布日期	1970.08.28
申请号	FR19690040942	申请日期	1969.11.27
申请人	BELL ET HOWELL CY	发明人
分类号	G03B13/20;(IPC1-7):G03B3/00	主分类号	G03B13/20
代理机构		代理人
主权项
地址

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