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发明名称
Improvements relating to electro-magnetic pick-ups
摘要
申请公布号
GB652026(A)
申请公布日期
1951.04.11
申请号
GB19480031144
申请日期
1948.12.01
申请人
THE BRITISH THOMSON-HOUSTON COMPANY LIMITED;WILLIAM ARTHUR BOCOCK
发明人
分类号
H04R11/08
主分类号
H04R11/08
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代理人
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