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发明名称
Electromagnetic translating device
摘要
申请公布号
US2037255(A)
申请公布日期
1936.04.14
申请号
US19310524286
申请日期
1931.03.21
申请人
UNITED RESEARCH CORPORATION
发明人
MILLER JAMES ARTHUR
分类号
H04R11/08
主分类号
H04R11/08
代理机构
代理人
主权项
地址
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