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发明名称
Exposure control for photographic cameras
摘要
申请公布号
US2996965(A)
申请公布日期
1961.08.22
申请号
US19560628753
申请日期
1956.12.17
申请人
BELL & HOWELL COMPANY
发明人
JR. MERVIN W. LA RUE,;WIGHTMAN WILLIAM W.
分类号
G03B7/085
主分类号
G03B7/085
代理机构
代理人
主权项
地址
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