CONCRETE PILE INSTALLATION METHOD BY MEANS OF CENTER-BORING METHOD AND EXCAVATING DEVICE,申请号JP19900063585-传众专利搜索

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发明名称	CONCRETE PILE INSTALLATION METHOD BY MEANS OF CENTER-BORING METHOD AND EXCAVATING DEVICE
摘要
申请公布号	JPH03262821(A)	申请公布日期	1991.11.22
申请号	JP19900063585	申请日期	1990.03.14
申请人	MITANI SEKISAN CO LTD	发明人	KATO YOICHI
分类号	E21B10/32;E02D3/12;E02D5/50;E02D7/00;E21B7/00	主分类号	E21B10/32
代理机构		代理人
主权项
地址

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