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发明名称
IMPROVEMENTS IN OR RELATING TO MAGNETIC FOCUSSING SYSTEMS FOR TRAVELLING WAVE TUBES
摘要
申请公布号
GB1207035(A)
申请公布日期
1970.09.30
申请号
GB19680056171
申请日期
1968.11.27
申请人
SIEMENS AKTIENGESELLSCHAFT
发明人
分类号
H01J23/00;H01J23/087
主分类号
H01J23/00
代理机构
代理人
主权项
地址
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