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经营范围
发明名称
Improvements in and relating to diaphragms for sound reproducing instruments
摘要
申请公布号
GB485550(A)
申请公布日期
1938.05.18
申请号
GB19360022723
申请日期
1936.08.18
申请人
JOSIAH ALFRED BRISCOE;JAMES HOPKIRK NELSON;CELESTION LIMITED;MURPHY RADIO LIMITED
发明人
分类号
H04R31/00
主分类号
H04R31/00
代理机构
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