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发明名称
CONSTRUCTION OF LOUDSPEAKER APPARATUS
摘要
申请公布号
GB8307012(D0)
申请公布日期
1983.04.20
申请号
GB19830007012
申请日期
1983.03.15
申请人
MACFARLANE, P G D;SCOTT, P
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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