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经营范围
发明名称
Automatic compensation for film emulsion speed in a camera with light meter
摘要
申请公布号
US3025777(A)
申请公布日期
1962.03.20
申请号
US19600073299
申请日期
1960.12.02
申请人
WILKENSON ERIK A
发明人
WILKENSON ERIK A.
分类号
G03B7/06
主分类号
G03B7/06
代理机构
代理人
主权项
地址
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