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发明名称
Bohrwinden- und Drehtischantrieb fuer Tiefbohrungen
摘要
申请公布号
DE612285(C)
申请公布日期
1935.04.18
申请号
DE1932N033519D
申请日期
1932.04.02
申请人
THE NATIONAL SUPPLY CORPORATION;THE NATIONAL SUPPLY CORPORATION
发明人
分类号
E21B3/06
主分类号
E21B3/06
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代理人
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地址
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