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发明名称
RING LOOP SLOW-WAVE CIRCUIT FOR TRAVELLING-WAVE TUBE
摘要
申请公布号
JPH03138837(A)
申请公布日期
1991.06.13
申请号
JP19890276839
申请日期
1989.10.23
申请人
NEC CORP
发明人
TSUTAKI KUNIO
分类号
H01J23/24
主分类号
H01J23/24
代理机构
代理人
主权项
地址
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