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经营范围
发明名称
DRILLING CUTTER
摘要
申请公布号
JPH02204592(A)
申请公布日期
1990.08.14
申请号
JP19890020874
申请日期
1989.02.01
申请人
MITSUBISHI HEAVY IND LTD
发明人
KUWABARA TOSHIYUKI
分类号
E21B10/46
主分类号
E21B10/46
代理机构
代理人
主权项
地址
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