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发明名称
摘要
申请公布号	FR2420644(B1)	申请公布日期	1983.07.01
申请号	FR19790007204	申请日期	1979.03.21
申请人	BOCHUMER EISENHUTTE HEINTZMANN	发明人
分类号	E21D9/10;E21D11/40;(IPC1-7):E21D9/10;E21C25/60;E21C27/28	主分类号	E21D9/10
代理机构		代理人
主权项
地址

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