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经营范围
发明名称
Improvements in alternating-current voltmeters
摘要
申请公布号
GB475287(A)
申请公布日期
1937.11.17
申请号
GB19360019705
申请日期
1936.07.16
申请人
LAURENCE BEDDOME TURNER
发明人
分类号
G01R17/00
主分类号
G01R17/00
代理机构
代理人
主权项
地址
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