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发明名称
PENS ELLER KRYSS.
摘要
申请公布号
NO143635(C)
申请公布日期
1981.03.18
申请号
NO19760000009
申请日期
1976.01.02
申请人
VER OESTERREICHISCHE EISEN- U STAHLWERKE ALPINE MONTAN AG
发明人
FRIESENBICHLER, EDUARD,
分类号
E01B7/12;E01B7/16;(IPC1-7):E21B7/00
主分类号
E01B7/12
代理机构
代理人
主权项
地址
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