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发明名称
Проекционный фонарь
摘要
申请公布号
SU44364(A1)
申请公布日期
1935.09.30
申请号
SU19350167681
申请日期
1935.04.17
申请人
ARENKOV A.V.;VASILEV N.YA.
发明人
ARENKOV A.V.;VASILEV N.YA.
分类号
G03B21/20;G02B19/00
主分类号
G03B21/20
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代理人
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