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发明名称
TRAVELLING-WAVE TUBE
摘要
申请公布号
JPH02177236(A)
申请公布日期
1990.07.10
申请号
JP19880217285
申请日期
1988.08.31
申请人
NEC CORP
发明人
FUKUI HAJIME
分类号
H01J23/26;H01J23/30
主分类号
H01J23/26
代理机构
代理人
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地址
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