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发明名称
Improvements in sound-reproducers
摘要
申请公布号
GB395685(A)
申请公布日期
1933.07.20
申请号
GB19310028879
申请日期
1931.10.17
申请人
NARZISS ACH;GODEHARD WILICHOWSKI
发明人
分类号
G11B17/02
主分类号
G11B17/02
代理机构
代理人
主权项
地址
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