LEADING PIPE DEVICE FOR SMALL-BORE PIPE IN UNDERGROUND BURYING MACHINE,申请号JP19890000386-传众专利搜索

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发明名称	LEADING PIPE DEVICE FOR SMALL-BORE PIPE IN UNDERGROUND BURYING MACHINE
摘要
申请公布号	JPH02183093(A)	申请公布日期	1990.07.17
申请号	JP19890000386	申请日期	1989.01.06
申请人	KOMATSU LTD	发明人	TAKEUCHI TAKU
分类号	E21B4/02;E21D9/04;E21D9/08	主分类号	E21B4/02
代理机构		代理人
主权项
地址

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