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发明名称
Обтюратор для кинопроекторов
摘要
申请公布号
SU29350(A1)
申请公布日期
1933.02.28
申请号
SU19310099074
申请日期
1931.12.08
申请人
VOLYNSKIJ P.I.
发明人
VOLYNSKIJ P.I.
分类号
G03B11/00
主分类号
G03B11/00
代理机构
代理人
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