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经营范围
发明名称
Improved apparatus for automatically changing phonograph records
摘要
申请公布号
GB433131(A)
申请公布日期
1935.08.06
申请号
GB19340003918
申请日期
1934.02.06
申请人
FRANCOIS DUFAY
发明人
分类号
G11B17/16
主分类号
G11B17/16
代理机构
代理人
主权项
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