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经营范围
发明名称
Improvements in or relating to recording
摘要
申请公布号
GB684628(A)
申请公布日期
1952.12.24
申请号
GB19500008687
申请日期
1950.04.06
申请人
DICTAPHONE CORPORATION
发明人
分类号
G11B5/74
主分类号
G11B5/74
代理机构
代理人
主权项
地址
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