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经营范围
发明名称
BORED FILTER
摘要
申请公布号
CS222303(B1)
申请公布日期
1983.06.24
申请号
CS19780002811
申请日期
1978.05.03
申请人
SMIDA,LADISLAV,CS;POKOJNY,JOZEF,CS
发明人
SMIDA,LADISLAV,CS;POKOJNY,JOZEF,CS
分类号
E21B10/00;E21B43/013;(IPC1-7):E21B43/013
主分类号
E21B10/00
代理机构
代理人
主权项
地址
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