,申请号NL19670009181-传众专利搜索

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发明名称
摘要
申请公布号	NL6709181(A)	申请公布日期	1968.01.02
申请号	NL19670009181	申请日期	1967.06.30
申请人		发明人
分类号	E21B7/00	主分类号	E21B7/00
代理机构		代理人
主权项
地址

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