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发明名称
Improvements relating to electrical indicating instruments
摘要
申请公布号
GB495485(A)
申请公布日期
1938.11.15
申请号
GB19370014991
申请日期
1937.05.29
申请人
EVERSHED AND VIGNOLES LIMITED;GEORGE BERKELEY ROLFE
发明人
分类号
G01R19/145
主分类号
G01R19/145
代理机构
代理人
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