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发明名称
STUDY AID IN PHYSICS
摘要
申请公布号
SU1688275(A1)
申请公布日期
1991.10.30
申请号
SU19894669897
申请日期
1989.03.30
申请人
KY G UNIVERSITET
发明人
SALAMAKHO IVAN K,SU
分类号
G09B23/18
主分类号
G09B23/18
代理机构
代理人
主权项
地址
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