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发明名称
Противопожарное приспособление для кинопроектора
摘要
申请公布号
SU19447(A1)
申请公布日期
1931.02.28
申请号
SU19290052141
申请日期
1929.07.31
申请人
EGOROV V.M.
发明人
EGOROV V.M.
分类号
G03B21/18
主分类号
G03B21/18
代理机构
代理人
主权项
地址
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