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发明名称
Einrichtung zur Feststellung der Differenz oder Summe von Wechselstromfrequenzen
摘要
申请公布号
DE856177(C)
申请公布日期
1952.11.20
申请号
DE1950L003453
申请日期
1950.08.30
申请人
LICENTIA PATENT-VERWALTUNGS-G.M.B.H.
发明人
SCHOETTLE HELMUT DIPL.-ING.
分类号
G01R23/02
主分类号
G01R23/02
代理机构
代理人
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