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发明名称
Device for replacing a camera housing by a focusing screen housing
摘要
申请公布号
US2511355(A)
申请公布日期
1950.06.13
申请号
US19490088289
申请日期
1949.04.19
申请人
ERNST LEITZ, G. M. B. H.
发明人
LUZ CHRISTIAN
分类号
G03B13/18
主分类号
G03B13/18
代理机构
代理人
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