EXCAVATING METHOD AND DEVICE THEREOF,申请号JP19920052024-传众专利搜索

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发明名称	EXCAVATING METHOD AND DEVICE THEREOF
摘要
申请公布号	JPH05187176(A)	申请公布日期	1993.07.27
申请号	JP19920052024	申请日期	1992.01.08
申请人	ONISHI SHIGERU;SHIKINAMI HIROKO	发明人	ONISHI SHIGERU
分类号	E21B3/00;E21B7/20;E21B10/02	主分类号	E21B3/00
代理机构		代理人
主权项
地址

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