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发明名称
Improvements in or relating to sound reproducers
摘要
申请公布号
GB305543(A)
申请公布日期
1930.04.03
申请号
GB19290004006
申请日期
1929.02.06
申请人
VESPER ANDERSON SCHLENKER
发明人
分类号
H04R9/02;H04R9/06
主分类号
H04R9/02
代理机构
代理人
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地址
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