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发明名称
AUTOMATIC DISCHARGED SOIL DRILLING BUCKET
摘要
申请公布号
JPH0579268(A)
申请公布日期
1993.03.30
申请号
JP19910242285
申请日期
1991.09.24
申请人
INOUE HACHIRO
发明人
INOUE HACHIRO
分类号
E21B11/00
主分类号
E21B11/00
代理机构
代理人
主权项
地址
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