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发明名称
Magnetic recording system
摘要
申请公布号
US2817829(A)
申请公布日期
1957.12.24
申请号
US19530369923
申请日期
1953.07.23
申请人
UNDERWOOD CORPORATION
发明人
LUBKIN SAMUEL
分类号
G11B20/16
主分类号
G11B20/16
代理机构
代理人
主权项
地址
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