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发明名称
Loudspeaking systems and amplifying methods
摘要
申请公布号
US2763720(A)
申请公布日期
1956.09.18
申请号
US19500197006
申请日期
1950.11.22
申请人
AUDIO EQUIPMENT COMPANY, INC.
发明人
SANIAL ARTHUR J.
分类号
H04M9/08
主分类号
H04M9/08
代理机构
代理人
主权项
地址
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