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发明名称
Improvements in electromagnetic electroacoustic transducers
摘要
申请公布号
GB995744(A)
申请公布日期
1965.06.23
申请号
GB19610042219
申请日期
1961.11.24
申请人
RUDOLF GOERIKE
发明人
分类号
H04R11/00
主分类号
H04R11/00
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代理人
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