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发明名称
ELEKTRO-AKOESTISCHE TRANSDUCENT.
摘要
申请公布号
NL7906099(A)
申请公布日期
1980.02.19
申请号
NL19790006099
申请日期
1979.08.09
申请人
SONY CORPORATION (SONY KABUSHIKI KAISHA) TE TOKIO.
发明人
分类号
H04R9/00;H04R9/04;(IPC1-7):H04R9/06
主分类号
H04R9/00
代理机构
代理人
主权项
地址
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