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发明名称	AUSBLASPREVENTER
摘要
申请公布号	DE2148179(B2)	申请公布日期	1978.02.16
申请号	DE19712148179	申请日期	1971.09.27
申请人		发明人
分类号	E21B33/06;(IPC1-7):E21B33/06	主分类号	E21B33/06
代理机构		代理人
主权项
地址

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