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经营范围
发明名称
Improvements in or relating to photo-electric cells
摘要
申请公布号
GB356747(A)
申请公布日期
1931.09.07
申请号
GB19300017478
申请日期
1930.06.05
申请人
THE GRAMOPHONE COMPANY LIMITED;WILLIAM FRANCIS TEDHAM
发明人
分类号
H01J40/10
主分类号
H01J40/10
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