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发明名称
DISPOSITIVO TRIVELLATORE
摘要
申请公布号
IT8067637(D0)
申请公布日期
1980.04.23
申请号
IT19800067637
申请日期
1980.04.23
申请人
SALZGITTER MASCHINEN UND ANLAGEN AKTIENGESELLSCHAFT
发明人
WERNER MAGER
分类号
E21B4/02;E21B4/18;(IPC1-7):E21B/
主分类号
E21B4/02
代理机构
代理人
主权项
地址
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