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发明名称
Improvements in and relating to gramophone pick-ups
摘要
申请公布号
GB488294(A)
申请公布日期
1938.07.05
申请号
GB19370003206
申请日期
1937.02.03
申请人
THE BRITISH THOMSON-HOUSTON COMPANY LIMITED;WILLIAM ARTHUR BOCOCK;HUGH SIMPSON
发明人
分类号
H04R17/04
主分类号
H04R17/04
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代理人
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地址
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