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发明名称
DRILLING DEVICE
摘要
申请公布号
JPH06330686(A)
申请公布日期
1994.11.29
申请号
JP19930122762
申请日期
1993.05.25
申请人
AKIBA SANGYO KK
发明人
MATSUZAKI TAKAHIDE;KUBOTA TAKAYOSHI;UEMURA SHIGEKI
分类号
E21B4/14;E21B7/28;E21B7/30;E21B10/32;E21B10/40;(IPC1-7):E21B4/14
主分类号
E21B4/14
代理机构
代理人
主权项
地址
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