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发明名称
Improvements in and relating to electric phase-difference responsive devices
摘要
申请公布号
GB411886(A)
申请公布日期
1934.06.11
申请号
GB19320031679
申请日期
1932.11.09
申请人
THE BRITISH THOMSON-HOUSTON COMPANY, LIMITED
发明人
分类号
G01R21/00
主分类号
G01R21/00
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代理人
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