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摘要
申请公布号
SU65037(A1)
申请公布日期
1944.11.30
申请号
SU19430331024
申请日期
1943.10.29
申请人
POLYAKOV E.V.
发明人
POLYAKOV E.V.
分类号
E04B7/10;E04B1/32
主分类号
E04B7/10
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