,申请号FR19690016501-传众专利搜索

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发明名称
摘要
申请公布号	FR2009178(A1)	申请公布日期	1970.01.30
申请号	FR19690016501	申请日期	1969.05.21
申请人	SHELL INTERNA RESE MAAT	发明人
分类号	E21B7/128;E21B17/01;E21B33/038;E21B41/10;(IPC1-7):E21B43/00	主分类号	E21B7/128
代理机构		代理人
主权项
地址

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