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经营范围
发明名称
Sound reproducing means
摘要
申请公布号
US2948778(A)
申请公布日期
1960.08.09
申请号
US19560583106
申请日期
1956.05.07
申请人
CLEMENTS WARNER W
发明人
CLEMENTS WARNER W.
分类号
H03F1/36
主分类号
H03F1/36
代理机构
代理人
主权项
地址
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