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摘要
申请公布号
SU62262(A1)
申请公布日期
1942.11.30
申请号
SU19410041204
申请日期
1941.02.26
申请人
ABDURASHITOV S.A.
发明人
ABDURASHITOV S.A.
分类号
E21B49/00
主分类号
E21B49/00
代理机构
代理人
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