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发明名称
DEVICE FOR WITHDRAWING CORE FROM CORE PIPES
摘要
申请公布号
SU1328477(A1)
申请公布日期
1987.08.07
申请号
SU19864008087
申请日期
1986.01.14
申请人
MENDEBAEV TOKTAMYS N,SU;KURTOV VENIAMIN D,SU;BESKROVNYJ VIKTOR T,SU
发明人
MENDEBAEV TOKTAMYS N,SU;KURTOV VENIAMIN D,SU;BESKROVNYJ VIKTOR T,SU
分类号
E21B25/00
主分类号
E21B25/00
代理机构
代理人
主权项
地址
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