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发明名称
VODICI A STREDICI USTROJI VRTACI TYCE
摘要
申请公布号
CS8104934(A2)
申请公布日期
1988.06.15
申请号
CS19810004934
申请日期
1981.06.29
申请人
OY TAMPELLA AB,FI
发明人
LEPPAELAE MATTI,FI
分类号
E21B17/10;E21B19/24;(IPC1-7):E21C9/00
主分类号
E21B17/10
代理机构
代理人
主权项
地址
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