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发明名称
Improvements in or relating to photographic exposure meters
摘要
申请公布号
GB458695(A)
申请公布日期
1936.12.24
申请号
GB19350020921
申请日期
1935.07.23
申请人
THE GENERAL ELECTRIC COMPANY LIMITED;EDGAR HAROLD WALTER BANNER
发明人
分类号
G01J1/42
主分类号
G01J1/42
代理机构
代理人
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地址
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