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发明名称
摘要
申请公布号	FR2449749(B1)	申请公布日期	1981.06.26
申请号	FR19790005568	申请日期	1979.02.26
申请人	LIGONES HUBERT	发明人
分类号	E02F3/32;E21B19/087;(IPC1-7):E02F3/84;A01B63/11;G05D3/00	主分类号	E02F3/32
代理机构		代理人
主权项
地址

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