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发明名称
Dampfentladungsröhre.
摘要
申请公布号
AT134570(B)
申请公布日期
1933.08.25
申请号
ATD134570
申请日期
1931.06.23
申请人
ALLGEMEINE ELEKTRICITAETS-GESELLSCHAFT
发明人
分类号
主分类号
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