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发明名称
Буровая машина для рытья котлованов
摘要
申请公布号
SU50100(A1)
申请公布日期
1936.08.31
申请号
SU19320111599
申请日期
1932.06.26
申请人
IOFFE YA.I.
发明人
IOFFE YA.I.
分类号
E21B3/02;E02F5/20;E21B19/081
主分类号
E21B3/02
代理机构
代理人
主权项
地址
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