METHOD OF EXCAVATING INSIDE OF STEEL PIPE PILE,申请号JP19760112698-传众专利搜索

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发明名称	METHOD OF EXCAVATING INSIDE OF STEEL PIPE PILE
摘要
申请公布号	JPS5338101(A)	申请公布日期	1978.04.07
申请号	JP19760112698	申请日期	1976.09.20
申请人	SHIMIZU CONSTRUCTION CO LTD	发明人	SATOU SHIGEMI
分类号	E21B7/20	主分类号	E21B7/20
代理机构		代理人
主权项
地址

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