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发明名称
SLOT METERS
摘要
申请公布号
IE11320(L)
申请公布日期
1931.02.12
申请号
IED11320
申请日期
1930.06.25
申请人
FERRANTI LIMITED
发明人
分类号
(IPC1-7):G07F/00
主分类号
(IPC1-7):G07F/00
代理机构
代理人
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