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发明名称
Double cone-type loudspeaker
摘要
申请公布号
GB9711641(D0)
申请公布日期
1997.07.30
申请号
GB19970011641
申请日期
1997.06.05
申请人
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD
发明人
分类号
H04R9/04;H04R7/12;H04R9/06
主分类号
H04R9/04
代理机构
代理人
主权项
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