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经营范围
发明名称
Sound reproduction system
摘要
申请公布号
US2931862(A)
申请公布日期
1960.04.05
申请号
US19570674700
申请日期
1957.07.29
申请人
NORTH AMERICAN PHILIPS COMPANY, INC.
发明人
VERMEULEN ROELOF;KLEIS DERK
分类号
G10K15/10
主分类号
G10K15/10
代理机构
代理人
主权项
地址
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