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发明名称
A HYDRAUTIC PRESSURE PRIVIDING STRUCTURE FOR EXCAVATING BIT
摘要
申请公布号
KR20060006756(A)
申请公布日期
2006.01.19
申请号
KR20050136246
申请日期
2005.12.31
申请人
DONG-A GEOLOGICAL ENGINEERING CO., LTD.;SONG, JUN HWA;PARK, BYOUNG GEON
发明人
LEE, JAE WOOK;JUNG, MOON SICK
分类号
E21B10/00;E21B17/00
主分类号
E21B10/00
代理机构
代理人
主权项
地址
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