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经营范围
发明名称
Acoustic translating device
摘要
申请公布号
US2038687(A)
申请公布日期
1936.04.28
申请号
US19350010922
申请日期
1935.03.13
申请人
FRANCIS SYKES ADRIAN
发明人
SYKES ADRIAN FRANCIS
分类号
H04R1/16
主分类号
H04R1/16
代理机构
代理人
主权项
地址
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