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发明名称
Improvements in and relating to electron discharge apparatus
摘要
申请公布号
GB722215(A)
申请公布日期
1955.01.19
申请号
GB19520017008
申请日期
1952.07.07
申请人
BURROUGHS ADDING MACHINE COMPANY
发明人
分类号
G06F7/38;H01J31/06
主分类号
G06F7/38
代理机构
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