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发明名称
Безопасная шпилевая катушка к бурильной лебедке
摘要
申请公布号
SU95631(A1)
申请公布日期
1952.11.30
申请号
SU19520445677
申请日期
1952.03.19
申请人
SULTANOV D.K.
发明人
SULTANOV D.K.
分类号
E21B3/06;B66D1/36
主分类号
E21B3/06
代理机构
代理人
主权项
地址
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