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经营范围
发明名称
Improvements in or relating to permanent magnet loudspeakers
摘要
申请公布号
GB918033(A)
申请公布日期
1963.02.13
申请号
GB19600021201
申请日期
1960.06.16
申请人
PHILIPS ELECTRICAL INDUSTRIES LIMITED
发明人
分类号
H04R9/02
主分类号
H04R9/02
代理机构
代理人
主权项
地址
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