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经营范围
发明名称
Improvements in or relating to electrical measuring apparatus
摘要
申请公布号
GB545999(A)
申请公布日期
1942.06.23
申请号
GB19400017946
申请日期
1940.12.20
申请人
STANDARD TELEPHONES AND CABLES LIMITED;ROY MAYNE BARNARD;WALTER KRAM
发明人
分类号
G01R19/22
主分类号
G01R19/22
代理机构
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