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发明名称
Improvements in or relating to sound boxes for gramophones and the like
摘要
申请公布号
GB685171(A)
申请公布日期
1952.12.31
申请号
GB19500026553
申请日期
1950.10.31
申请人
PETER SCHMIDT
发明人
分类号
G11B3/50
主分类号
G11B3/50
代理机构
代理人
主权项
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