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发明名称
COVER
摘要
申请公布号
RU1834964(C)
申请公布日期
1993.08.15
申请号
SU19914914846
申请日期
1991.02.28
申请人
ORLOV YURIJ M
发明人
ORLOV YURIJ M
分类号
E04D7/00
主分类号
E04D7/00
代理机构
代理人
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