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发明名称
Пильная машина для разработки мерзлых грунтов и вскрытии твердых наносов
摘要
申请公布号
SU44208(A1)
申请公布日期
1935.09.30
申请号
SU19340153027
申请日期
1934.08.24
申请人
MIKHAJLOV A.D.
发明人
MIKHAJLOV A.D.
分类号
E21C47/10;B28D1/04
主分类号
E21C47/10
代理机构
代理人
主权项
地址
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