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发明名称
Rollenbohrer
摘要
申请公布号
DE729489(C)
申请公布日期
1942.12.17
申请号
DE1940S139771D
申请日期
1940.01.12
申请人
J.C. SOEDING & HALBACH, EDELSTAHLWERKE
发明人
FISCHER KARL
分类号
E21B10/10
主分类号
E21B10/10
代理机构
代理人
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地址
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