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发明名称
摘要
申请公布号	NL6405458(A)	申请公布日期	1965.11.16
申请号	NL19640005458	申请日期	1964.05.15
申请人		发明人
分类号	E02B17/02;E21B15/02	主分类号	E02B17/02
代理机构		代理人
主权项
地址

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