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发明名称
Permanent-magnetisches System, insbesondere für einen elektrodynamischen Lautsprecher
摘要
申请公布号
AT163129(B)
申请公布日期
1949.05.25
申请号
ATD163129
申请日期
1947.12.06
申请人
N. V. PHILIPS' GLOEILAMPENFABRIEKEN
发明人
分类号
主分类号
代理机构
代理人
主权项
地址
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