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发明名称
ARRANGEMENT FOR PREPARING FROZEN SOIL TO WORKING
摘要
申请公布号
SU1506107(A1)
申请公布日期
1989.09.07
申请号
SU19864100290
申请日期
1986.07.31
申请人
NOVOSIBIRSK VNII TRANSP
发明人
ROSHCHUPKIN DMITRIJ V,SU;ZDOBNINA VALENTINA D,SU;ROSHCHUPKIN VALERIJ D,SU;PIMENOV VIKTOR T,SU
分类号
E21C41/00
主分类号
E21C41/00
代理机构
代理人
主权项
地址
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