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经营范围
发明名称
BORE CENTERING DEVICE
摘要
申请公布号
YU259678(A)
申请公布日期
1982.08.31
申请号
YU19780002596
申请日期
1978.02.07
申请人
KOMITET PO GEOLOGIA
发明人
NENKOV D.N.;RADOEV P.S.
分类号
B23B49/02;E21B7/10;(IPC1-7):E21B7/10;E21C9/00
主分类号
B23B49/02
代理机构
代理人
主权项
地址
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