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发明名称
DEVICE FOR DEMONSTATION OF SURFACES
摘要
申请公布号
SU1532966(A1)
申请公布日期
1989.12.30
申请号
SU19874346592
申请日期
1987.12.21
申请人
SIMFEROPOLSKIJ DN INZH-STR INSTITUTA
发明人
KHOLODNYJ MIKHAIL T,SU;OSTAPCHUK VASILIJ K,SU
分类号
G09B23/04
主分类号
G09B23/04
代理机构
代理人
主权项
地址
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