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经营范围
发明名称
ARRANGEMENT FOR TAKING ORIENTED CORE
摘要
申请公布号
SU750047(A1)
申请公布日期
1980.07.23
申请号
SU19782586316
申请日期
1978.02.22
申请人
SHAKHOVSKIJ BORIS P,SU
发明人
SHAKHOVSKIJ BORIS P,SU
分类号
E21B47/022;E21B25/16;E21B47/026;E21B49/00;(IPC1-7):E21B47/02
主分类号
E21B47/022
代理机构
代理人
主权项
地址
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