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发明名称
Einrichtung zur Konstanthaltung der Frequenz von Schwingungen eines Röhrenoszillators.
摘要
申请公布号
AT149482(B)
申请公布日期
1937.05.10
申请号
ATD149482
申请日期
1934.12.18
申请人
JOHNSON LABORATORIES, INCORPORATED
发明人
分类号
主分类号
代理机构
代理人
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