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发明名称
摘要
申请公布号	FR1555144(A)	申请公布日期	1969.01.24
申请号	FRD1555144	申请日期	1968.02.22
申请人		发明人
分类号	E04H7/20;G21C13/036;G21C13/093	主分类号	E04H7/20
代理机构		代理人
主权项
地址

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