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发明名称
Loud speaker construction
摘要
申请公布号
US3095941(A)
申请公布日期
1963.07.02
申请号
US19570658095
申请日期
1957.05.09
申请人
FAUTHAL A. HASSAN
发明人
HASSAN JOSEPH A.
分类号
H04R7/20;H04R9/06
主分类号
H04R7/20
代理机构
代理人
主权项
地址
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