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发明名称
Устройство для определения прочности естественного ледяного покрова по скорости распространения в нем упругих колебаний
摘要
申请公布号
SU145788(A1)
申请公布日期
1961.11.30
申请号
SU19610722936
申请日期
1961.03.20
申请人
发明人
LISTOV A.N.
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主分类号
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代理人
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