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发明名称
SCRAPER BOX UNIT
摘要
申请公布号
SU1532700(A1)
申请公布日期
1989.12.30
申请号
SU19884390721
申请日期
1988.03.14
申请人
DO POLT INSTITUT
发明人
MAKEEV ALEKSANDR YU,SU;BONDARENKO YURIJ V,SU;SAPITSKIJ KONSTANTIN F,SU;TELICHKO VLADISLAV I,SU
分类号
E21C27/42
主分类号
E21C27/42
代理机构
代理人
主权项
地址
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