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经营范围
发明名称
EXCAVATING TOOL
摘要
申请公布号
JPH08144679(A)
申请公布日期
1996.06.04
申请号
JP19940290223
申请日期
1994.11.24
申请人
MITSUBISHI MATERIALS CORP
发明人
HAYASHI TAKESHI;YOSHIDA KAZUYOSHI
分类号
E21B1/38;E21B1/00;E21B10/38;(IPC1-7):E21B10/38
主分类号
E21B1/38
代理机构
代理人
主权项
地址
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