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经营范围
发明名称
Improvements in or relating to loud speakers
摘要
申请公布号
GB635024(A)
申请公布日期
1950.03.29
申请号
GB19470023452
申请日期
1947.08.25
申请人
GOODMANS INDUSTRIES LIMITED;GERALD RAYMOND HOSKER
发明人
分类号
H04R7/16;H04R7/20
主分类号
H04R7/16
代理机构
代理人
主权项
地址
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