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发明名称
Kaivintyökalu
摘要
申请公布号
FI91551(B)
申请公布日期
1994.03.31
申请号
FI19910000955
申请日期
1991.02.27
申请人
MITSUBISHI MATERIALS CORPORATION
发明人
HAYASHI, TAKESHI;SATO, SHIGERU;TSUJIMOTO, KATSUAKI;MIYAZAKI, DAISHIRO;HIWASA, YONEO;ISHIMATSU, TOSHIKI
分类号
E21B10/32;E21B10/56;E21B10/66;(IPC1-7):E21B10/32
主分类号
E21B10/32
代理机构
代理人
主权项
地址
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