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发明名称
PERFECTIONNEMENT AUX APPAREILS TELEPHONIQUES A HAUT PARLEUR
摘要
申请公布号
BE890109(A1)
申请公布日期
1981.12.16
申请号
BE19810205783
申请日期
1981.08.27
申请人
WESTERN ELECTRIC CY INC.
发明人
MUNSON V E
分类号
H04B3/20;H04M1/60;H04M9/10;(IPC1-7):H04M/
主分类号
H04B3/20
代理机构
代理人
主权项
地址
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