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发明名称
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摘要
申请公布号
SU140188(A1)
申请公布日期
1961.11.30
申请号
SU19610692503
申请日期
1961.01.09
申请人
发明人
MASLENNIKOV V.N.;RISKIND B.YA.
分类号
E04G21/12;B21F9/00;E04C5/08;F16G11/00
主分类号
E04G21/12
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代理人
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