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发明名称
Perfectionnements aux tubes à vide démontables
摘要
申请公布号
FR56004(E)
申请公布日期
1952.09.11
申请号
FRD56004
申请日期
1945.07.05
申请人
SOCIETE FRANCAISE RADIO-ELECTRIQUE
发明人
分类号
H01J5/28
主分类号
H01J5/28
代理机构
代理人
主权项
地址
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