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发明名称
Improvements in or relating to electrical frequency measuring instruments
摘要
申请公布号
GB767266(A)
申请公布日期
1957.01.30
申请号
GB19540007524
申请日期
1954.03.15
申请人
ELLIOTT BROTHERS (LONDON) LIMITED
发明人
HAWKES HARRY DONALD
分类号
A61K31/00;G01R23/02
主分类号
A61K31/00
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代理人
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