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摘要
申请公布号
SU41548(A1)
申请公布日期
1935.02.28
申请号
SU19340142145
申请日期
1934.02.13
申请人
ARTEMOV N.A.
发明人
ARTEMOV N.A.
分类号
E21D9/06
主分类号
E21D9/06
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