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发明名称
Improvements in and relating to loud speakers
摘要
申请公布号
GB337853(A)
申请公布日期
1930.11.13
申请号
GB19290025028
申请日期
1929.08.16
申请人
HUGH BRANTOM;HUBERT GARTH BAWTREE-WILLIAMS;ERNEST ARNOLD BITTON;H. AUSTIN STORRY LIMITED
发明人
分类号
H04R3/08
主分类号
H04R3/08
代理机构
代理人
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地址
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