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发明名称
Gegenlichtblende fuer fotografische Zwecke
摘要
申请公布号
DE910142(C)
申请公布日期
1954.04.29
申请号
DE1952A015655
申请日期
1952.04.30
申请人
APPARATE- UND KAMERABAU G.M.B.H.
发明人
ARMBRUSTER DR.-ING. EUGEN
分类号
G03B11/04
主分类号
G03B11/04
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代理人
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地址
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