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经营范围
发明名称
Improvements in or relating to methods and apparatus for monitoring electric signals
摘要
申请公布号
GB780267(A)
申请公布日期
1957.07.31
申请号
GB19540025351
申请日期
1954.09.01
申请人
ELECTRIC & MUSICAL INDUSTRIES LIMITED
发明人
CLARK HENRY ARTHUR MAISH;BERTH-JONES ERIC WOLLASTON
分类号
G11B5/00
主分类号
G11B5/00
代理机构
代理人
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