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发明名称
Perfectionnements aux électrodes des tubes à décharge
摘要
申请公布号
FR1110434(A)
申请公布日期
1956.02.13
申请号
FRD1110434
申请日期
1954.08.31
申请人
S. A. HYPERION
发明人
分类号
H01J61/04
主分类号
H01J61/04
代理机构
代理人
主权项
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