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发明名称
Vorrichtung zur Überwachung des Vakuums in Quecksilberdampf-Großgleichrichtern.
摘要
申请公布号
AT123309(B)
申请公布日期
1931.06.10
申请号
ATD123309
申请日期
1928.07.20
申请人
SIEMENS-SCHUCKERTWERKE AKTIENGESELLSCHAFT
发明人
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主分类号
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