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发明名称
Sound translating device
摘要
申请公布号
GB694604(A)
申请公布日期
1953.07.22
申请号
GB19510008072
申请日期
1951.04.06
申请人
AUTOMATIC ELECTRIC LABORATORIES, INC.
发明人
分类号
H04R13/02
主分类号
H04R13/02
代理机构
代理人
主权项
地址
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