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经营范围
发明名称
Improvements in and relating to microphones
摘要
申请公布号
GB855972(A)
申请公布日期
1960.12.14
申请号
GB19580012011
申请日期
1958.04.15
申请人
THE BRITISH BROADCASTING CORPORATION
发明人
HARWOOD HUGH DUDLEY;PACKER ROBERT JOSEPH
分类号
H04R1/08
主分类号
H04R1/08
代理机构
代理人
主权项
地址
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