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发明名称
Perfectionnements aux tubes de braun
摘要
申请公布号
FR843513(A)
申请公布日期
1939.07.05
申请号
FRD843513
申请日期
1938.09.15
申请人
ALLGEMEINE ELEKTRICITATS-GESELLSCHAFT
发明人
分类号
H01J29/74
主分类号
H01J29/74
代理机构
代理人
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地址
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