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发明名称
摘要
申请公布号	FR2508509(B1)	申请公布日期	1984.03.16
申请号	FR19810012693	申请日期	1981.06.26
申请人	COLAS SA	发明人
分类号	E01C3/00;E01C7/18;E01C7/26;E01C7/32;(IPC1-7):E01C7/32;E01C7/30	主分类号	E01C3/00
代理机构		代理人
主权项
地址

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