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发明名称
Vorrichtung zur Herstellung von Bohrungen im Erdboden
摘要
申请公布号
CH362374(A)
申请公布日期
1962.05.31
申请号
CHD362374
申请日期
1959.01.12
申请人
ZINKIEWICZ,WIKTOR
发明人
ZINKIEWICZ,WIKTOR
分类号
E02D11/00;E02F5/16;E21B4/14;E21C37/24
主分类号
E02D11/00
代理机构
代理人
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