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发明名称
CUTTER FOR CASING PIPE
摘要
申请公布号
JPH04209287(A)
申请公布日期
1992.07.30
申请号
JP19900308181
申请日期
1990.11.14
申请人
HITACHI CONSTR MACH CO LTD
发明人
KUSUMI HIROSHI
分类号
E21B10/02;E02D7/00
主分类号
E21B10/02
代理机构
代理人
主权项
地址
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