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经营范围
发明名称
Loudspeaker device
摘要
申请公布号
US3412207(A)
申请公布日期
1968.11.19
申请号
US19650483704
申请日期
1965.08.30
申请人
FEDTRO, INC.
发明人
SUGAWARA NOBORU
分类号
H04R27/04
主分类号
H04R27/04
代理机构
代理人
主权项
地址
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