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发明名称
BROAD BAND DYNAMIC LOUDSPEAKERS
摘要
申请公布号
GB1574856(A)
申请公布日期
1980.09.10
申请号
GB19780039995
申请日期
1977.03.21
申请人
BOBBCO LTD
发明人
分类号
H04R9/02;H04R9/04;H04R9/06;H04R31/00;(IPC1-7):H04R7/14
主分类号
H04R9/02
代理机构
代理人
主权项
地址
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