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发明名称
HAUTE-PARLEURS DE PLAQUE VIBRANT
摘要
申请公布号
PT66844(A)
申请公布日期
1977.08.01
申请号
PT19770066844
申请日期
1977.07.25
申请人
COSTA M
发明人
分类号
H04R7/04
主分类号
H04R7/04
代理机构
代理人
主权项
地址
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