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发明名称
SUPPORT DEVICE FOR BORING PIPE
摘要
申请公布号
JPH08128292(A)
申请公布日期
1996.05.21
申请号
JP19940266480
申请日期
1994.10.31
申请人
NITTOC CONSTR CO LTD
发明人
OKADA YASUHIRO;SUGA KOICHI
分类号
E21B19/24;(IPC1-7):E21C9/00
主分类号
E21B19/24
代理机构
代理人
主权项
地址
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