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发明名称
ELECTRO-DYNAMIC LOUD SPEAKER
摘要
申请公布号
CA316551(A)
申请公布日期
1931.10.27
申请号
CAD316551
申请日期
申请人
THE MAGNAVOX COMPANY
发明人
EDWIN S. PRIDHAM
分类号
主分类号
代理机构
代理人
主权项
地址
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