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发明名称
WIERTARKA OBROTOWA
摘要
申请公布号
PL208390(A1)
申请公布日期
1979.05.21
申请号
PL19780208390
申请日期
1978.07.12
申请人
TS OSRODEK P K MASZYN GORNICZY
发明人
WAROT TADEUSZ;OPALKA GUSTAW
分类号
E21B;(IPC1-7):E21B/
主分类号
E21B
代理机构
代理人
主权项
地址
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