,申请号JP19770017928-传众专利搜索

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发明名称
摘要
申请公布号	JPS5742796(B2)	申请公布日期	1982.09.10
申请号	JP19770017928	申请日期	1977.02.21
申请人		发明人
分类号	E21B1/26;E21B1/00;E21B1/12;E21B6/08	主分类号	E21B1/26
代理机构		代理人
主权项
地址

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