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发明名称
Loud speaker
摘要
申请公布号
US1886735(A)
申请公布日期
1932.11.08
申请号
US19290341231
申请日期
1929.02.19
申请人
THE MAGNAVOX COMPANY
发明人
PRIDHAM EDWIN S.
分类号
H04R9/06
主分类号
H04R9/06
代理机构
代理人
主权项
地址
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