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发明名称
DEVICE FOR DECREASING AIR PERMEABILITY OF HEAD HOUSE
摘要
申请公布号
SU1712626(A1)
申请公布日期
1992.02.15
申请号
SU19894697828
申请日期
1989.05.29
申请人
G PI "VOROSHILOVGRADGIPROSHAKHT"
发明人
ARTEMENKO ANATOLIJ V,SU;GUSHCHIN VIKTOR I,SU;CHEKMENEV GENNADIJ N,SU
分类号
E21F1/00
主分类号
E21F1/00
代理机构
代理人
主权项
地址
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