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发明名称	BAGGERZAHN
摘要
申请公布号	AT379839(B)	申请公布日期	1986.03.10
申请号	AT19810001867	申请日期	1981.04.24
申请人	ESCO CORPORATION	发明人
分类号	E21B10/04;E02F9/28;(IPC1-7):E02F9/28	主分类号	E21B10/04
代理机构		代理人
主权项
地址

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