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发明名称
Способ осушения затопленных шахт
摘要
申请公布号
SU92766(A1)
申请公布日期
1950.11.30
申请号
SU19470353166
申请日期
1947.03.22
申请人
CHASOVNIKOV A.S.
发明人
CHASOVNIKOV A.S.
分类号
E21D1/00
主分类号
E21D1/00
代理机构
代理人
主权项
地址
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