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发明名称
Sound reproducing system
摘要
申请公布号
US2259907(A)
申请公布日期
1941.10.21
申请号
US19390302729
申请日期
1939.11.03
申请人
THE STROMBERG-CARLSON TELEPHONE MANUFACTURING COMPANY
发明人
OLNEY BENJAMIN
分类号
H04R1/24
主分类号
H04R1/24
代理机构
代理人
主权项
地址
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