CONTROL METHOD OF EXCAVATION OF BOTTOM EXPANDING SECTION IN CONSTRUCTION OF BOTTOM EXPANDING SHAFT,申请号JP19890002037-传众专利搜索

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发明名称	CONTROL METHOD OF EXCAVATION OF BOTTOM EXPANDING SECTION IN CONSTRUCTION OF BOTTOM EXPANDING SHAFT
摘要
申请公布号	JPH02183085(A)	申请公布日期	1990.07.17
申请号	JP19890002037	申请日期	1989.01.10
申请人	OHBAYASHI CORP	发明人	YOSHIZAKI MASAAKI;YOKOYAMA YOSHIYUKI;YAMAMOTO YUKINOBU
分类号	E21B11/04;E21B44/00	主分类号	E21B11/04
代理机构		代理人
主权项
地址

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