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发明名称
Improvements relating to frequency meters and frequency signalling devices
摘要
申请公布号
GB1086671(A)
申请公布日期
1967.10.11
申请号
GB19640000163
申请日期
1964.01.02
申请人
FIELDEN ELECTRONICS LIMITED
发明人
WORLAND ARTHUR
分类号
G01R23/00
主分类号
G01R23/00
代理机构
代理人
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