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发明名称
Travelling wave electron discharge devices
摘要
申请公布号
GB787777(A)
申请公布日期
1957.12.18
申请号
GB19550033063
申请日期
1955.11.18
申请人
STANDARD TELEPHONES AND CABLES LIMITED
发明人
分类号
H01J23/26;H01J23/27
主分类号
H01J23/26
代理机构
代理人
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地址
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