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发明名称
METHOD OF WORKING U-PROFILED TRENCHES
摘要
申请公布号
SU881222(A1)
申请公布日期
1981.11.15
申请号
SU19772557347
申请日期
1977.12.19
申请人
BRUSS NII MELIORATSII VODNOGO KHOZYAJSTVA
发明人
KARLOVSKIJ VLADISLAV F,SU;SHISHKAREV VASILIJ D,SU;POGODIN NIKOLAJ N,SU
分类号
E02F5/30;(IPC1-7):E02F5/30
主分类号
E02F5/30
代理机构
代理人
主权项
地址
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