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发明名称
Способ искусственного замораживания грунтов
摘要
申请公布号
SU76442(A1)
申请公布日期
1948.11.30
申请号
SU19470372047
申请日期
1947.12.30
申请人
KOKSHENEV B.G.
发明人
KOKSHENEV B.G.
分类号
E21D1/12
主分类号
E21D1/12
代理机构
代理人
主权项
地址
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