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发明名称
Lichtschutzeinrichtung fuer die Suchermattscheibe einer photographischen Reflexkamera
摘要
申请公布号
DE1003033(B)
申请公布日期
1957.02.21
申请号
DE1955G016686
申请日期
1955.03.12
申请人
GENERAL ANILINE & FILM CORPORATION
发明人
POLHEMUS JOHN KENNETH
分类号
G03B13/20
主分类号
G03B13/20
代理机构
代理人
主权项
地址
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