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发明名称
摘要
申请公布号	FR2058314(A1)	申请公布日期	1971.05.28
申请号	FR19700030669	申请日期	1970.08.17
申请人	CEMENT CONCRETE ASSOC	发明人	MAYNARD D P;WEAVER J
分类号	E01C19/43;(IPC1-7):E01C19/00	主分类号	E01C19/43
代理机构		代理人
主权项
地址

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