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发明名称
WRITING AID FOR BLINDS
摘要
申请公布号
SU828205(A1)
申请公布日期
1981.05.07
申请号
SU19792762737
申请日期
1979.05.07
申请人
SHMIDOV GRIGORIJ R,SU
发明人
SHMIDOV GRIGORIJ R,SU
分类号
G09B21/00;(IPC1-7):G09B21/00
主分类号
G09B21/00
代理机构
代理人
主权项
地址
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