UNDERGROUND PUSHER FOR CURVED TUBE,申请号JP19880121853-传众专利搜索

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发明名称	UNDERGROUND PUSHER FOR CURVED TUBE
摘要
申请公布号	JPH01295990(A)	申请公布日期	1989.11.29
申请号	JP19880121853	申请日期	1988.05.20
申请人	NKK CORP	发明人	KODAMA KIYOSHI
分类号	E21B7/08;E21D9/06	主分类号	E21B7/08
代理机构		代理人
主权项
地址

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