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经营范围
发明名称
Plural-speed gramophones
摘要
申请公布号
US2953382(A)
申请公布日期
1960.09.20
申请号
US19570690878
申请日期
1957.10.17
申请人
THE PLESSEY COMPANY LIMITED
发明人
LEE JAMES ALEXANDER
分类号
G11B19/26
主分类号
G11B19/26
代理机构
代理人
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地址
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