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经营范围
发明名称
Sound reproducing apparatus
摘要
申请公布号
US1894197(A)
申请公布日期
1933.01.10
申请号
US19310558598
申请日期
1931.08.21
申请人
GENERAL ELECTRIC COMPANY
发明人
RICE CHESTER W.;KELLOGG EDWARD W.
分类号
H04R9/06
主分类号
H04R9/06
代理机构
代理人
主权项
地址
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