INTERTRUSS BRACING DEVICE FOR CASING FOR DRILLING IN GROUND EXCAVATOR,申请号JP19980164317-传众专利搜索

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发明名称	INTERTRUSS BRACING DEVICE FOR CASING FOR DRILLING IN GROUND EXCAVATOR
摘要
申请公布号	JPH11336460(A)	申请公布日期	1999.12.07
申请号	JP19980164317	申请日期	1998.05.27
申请人	ISHIOKA KENSETSU KK	发明人	SUGAWARA TADAYOSHI
分类号	E21B19/06;(IPC1-7):E21B19/06	主分类号	E21B19/06
代理机构		代理人
主权项
地址

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