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经营范围
发明名称
Improvements in or relating to recording voltmeters
摘要
申请公布号
GB787253(A)
申请公布日期
1957.12.04
申请号
GB19540031740
申请日期
1954.11.03
申请人
E. K. COLE LIMITED;VICTOR JAMES COX;RAYMOND JOHN DENNIS REEVES
发明人
分类号
G01R13/04;G01R17/02
主分类号
G01R13/04
代理机构
代理人
主权项
地址
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