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经营范围
发明名称
Magnetic recording
摘要
申请公布号
US2854526(A)
申请公布日期
1958.09.30
申请号
US19550487293
申请日期
1955.02.10
申请人
RADIO CORPORATION OF AMERICA
发明人
MORGAN ADOLPH R.
分类号
G11B15/46
主分类号
G11B15/46
代理机构
代理人
主权项
地址
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PRODUCTION OF SPUN YARN
