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经营范围
发明名称
Sound recording disk
摘要
申请公布号
US2578892(A)
申请公布日期
1951.12.18
申请号
US19470720681
申请日期
1947.01.07
申请人
ELECTRIC AND MUSICAL INDUSTRIES LIMITED
发明人
LORD WILLIAM EDWARD
分类号
C08J7/04
主分类号
C08J7/04
代理机构
代理人
主权项
地址
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