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发明名称
VENTILATION DUCT
摘要
申请公布号
SU1273596(A1)
申请公布日期
1986.11.30
申请号
SU19853935441
申请日期
1985.07.22
申请人
DO POLT INSTITUT
发明人
MEDVEDEV BORIS I,SU;SUKHORUKOV VIKTOR P,SU;KUZNETSOV VASILIJ V,SU
分类号
E21F1/04
主分类号
E21F1/04
代理机构
代理人
主权项
地址
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