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经营范围
发明名称
HEADPHONE SYSTEM
摘要
申请公布号
GB1517938(A)
申请公布日期
1978.07.19
申请号
GB19750051050
申请日期
1975.12.12
申请人
MATSUSHITA ELECTRIC IND CO LTD
发明人
分类号
H04S1/00;H04R5/033;(IPC1-7):H04R5/04
主分类号
H04S1/00
代理机构
代理人
主权项
地址
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