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发明名称
Improvements relating to recorders
摘要
申请公布号
GB665757(A)
申请公布日期
1952.01.30
申请号
GB19490008625
申请日期
1949.03.30
申请人
ARNOLD DOLMETSCH LIMITED;CARL FREDERICK DOLMETSCH
发明人
分类号
G10D7/02
主分类号
G10D7/02
代理机构
代理人
主权项
地址
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