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发明名称
ADDRESSABLE TRANSDUCER
摘要
申请公布号
GB2093243(B)
申请公布日期
1985.06.05
申请号
GB19820004448
申请日期
1982.02.16
申请人
SPARTON CORP
发明人
分类号
H04M3/28;H04Q9/14;(IPC1-7):H04Q9/14
主分类号
H04M3/28
代理机构
代理人
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