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发明名称
Improvements in or relating to frequency calibrating arrangements
摘要
申请公布号
GB991633(A)
申请公布日期
1965.05.12
申请号
GB19620006407
申请日期
1962.02.19
申请人
SOCIETE AUDIOLA
发明人
分类号
G01R13/30;G01R27/32
主分类号
G01R13/30
代理机构
代理人
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