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发明名称
摘要
申请公布号	FR2380463(B1)	申请公布日期	1982.09.17
申请号	FR19780003837	申请日期	1978.02.10
申请人	BENDIX CORP	发明人
分类号	E21B17/05;E21B17/20;F16C1/04;F16D3/18;F16D3/20;F16D3/221;(IPC1-7):16D3/16;21D20/00;21C15/00	主分类号	E21B17/05
代理机构		代理人
主权项
地址

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