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发明名称
SPREADING COLUMN
摘要
申请公布号
SU567811(A1)
申请公布日期
1977.08.05
申请号
SU19752147711
申请日期
1975.06.23
申请人
TSNII OLOVYANNOJ PROMYSHLENNOSTI
发明人
GOLODYAEV ARTEM P,SU;KORZUN ARTEM P,SU;ERSHOV SEMEN ,SU
分类号
E21B15/00;(IPC1-7):E21C11/00
主分类号
E21B15/00
代理机构
代理人
主权项
地址
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