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发明名称
Exposure meter dial structure
摘要
申请公布号
US2584406(A)
申请公布日期
1952.02.05
申请号
US19460714610
申请日期
1946.12.06
申请人
WILLCOX FREDERICK P
发明人
WILLCOX FREDERICK P.
分类号
G01J1/42
主分类号
G01J1/42
代理机构
代理人
主权项
地址
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