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经营范围
发明名称
Improvements in or relating to travelling wave devices
摘要
申请公布号
GB956809(A)
申请公布日期
1964.04.29
申请号
GB19620005076
申请日期
1962.02.09
申请人
LITTON INDUSTRIES INC.
发明人
分类号
H01J19/00;H01J23/30
主分类号
H01J19/00
代理机构
代理人
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