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发明名称
LOUDSPEAKER
摘要
申请公布号
CA763253(A)
申请公布日期
1967.07.18
申请号
CAD763253
申请日期
申请人
N.V. PHILIPS GLOEILAMPENFABRIEKEN
发明人
JEAN-LOUIS ROULET
分类号
主分类号
代理机构
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