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Electro-acoustic transducers
申请公布号:
GB2160388(A)
申请号:
GB19840015062
申请日期:
1984.06.13
申请公布日期:
1985.12.18
申请人:
THE * PLESSEY COMPANY PLC
发明人:
GEOFFREY MICHAEL * GARNER
分类号:
H04R17/00;(IPC1-7):H04R17/00
主分类号:
H04R17/00
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