,申请号NL19640010938-传众专利搜索

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发明名称
摘要
申请公布号	NL6410938(A)	申请公布日期	1965.03.22
申请号	NL19640010938	申请日期	1964.09.18
申请人		发明人
分类号	E21B33/04;E21B43/10	主分类号	E21B33/04
代理机构		代理人
主权项
地址

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