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发明名称
Telephone receiver
摘要
申请公布号
US2343859(A)
申请公布日期
1944.03.14
申请号
US19410390772
申请日期
1941.04.28
申请人
NATHANIEL BALDWIN
发明人
BALDWIN NATHANIEL
分类号
H04R11/00
主分类号
H04R11/00
代理机构
代理人
主权项
地址
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