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发明名称
CUTTER BIT
摘要
申请公布号
JPH05163883(A)
申请公布日期
1993.06.29
申请号
JP19910328883
申请日期
1991.12.12
申请人
MITSUBISHI HEAVY IND LTD
发明人
YAMAMOTO YUTAKA;OKAMOTO KAZUYUKI
分类号
E21B10/46
主分类号
E21B10/46
代理机构
代理人
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地址
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