SHAFT OF KELLY DRIVE DEVICE,申请号JP19910292184-传众专利搜索

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发明名称	SHAFT OF KELLY DRIVE DEVICE
摘要
申请公布号	JPH0598879(A)	申请公布日期	1993.04.20
申请号	JP19910292184	申请日期	1991.10.11
申请人	HITACHI CONSTR MACH CO LTD	发明人	NOZAKI SATOSHI
分类号	E21B3/02;E21B17/00	主分类号	E21B3/02
代理机构		代理人
主权项
地址

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