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发明名称
EINRICHTUNG ZUR BETAETIGUNG VON GESTAENGEZANGEN FUER SCHWERES BOHRGESTAENGE
摘要
申请公布号
AT297630(B)
申请公布日期
1972.03.15
申请号
AT19690009806
申请日期
1969.10.17
申请人
VEB MANSFELD KOMBINAT WILHELM PIECK
发明人
TROEMEL G;MALLIS U;STRITZEL M;CLOTH H;KEUFNER H;HORNUNG L;BECHTOLD H
分类号
E21B19/16;(IPC1-7):E21B19/10
主分类号
E21B19/16
代理机构
代理人
主权项
地址
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