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发明名称
Verfahren zur Bestimmung der Frequenz einer Wechselspannung
摘要
申请公布号
AT180096(B)
申请公布日期
1954.11.10
申请号
ATD180096
申请日期
1952.11.14
申请人
OTFRID RIEGER
发明人
OTFRID RIEGER
分类号
主分类号
代理机构
代理人
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地址
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