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发明名称
Передвижная мачта для буровых работ
摘要
申请公布号
SU67473(A1)
申请公布日期
1945.11.30
申请号
SU19430322502
申请日期
1943.06.23
申请人
ASAN-NURI A.A.;TIMOFEEV N.S.
发明人
ASAN-NURI A.A.;TIMOFEEV N.S.
分类号
E21B15/00
主分类号
E21B15/00
代理机构
代理人
主权项
地址
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