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发明名称
Block identifying marker system
摘要
申请公布号
US2923589(A)
申请公布日期
1960.02.02
申请号
US19550484221
申请日期
1955.01.26
申请人
HUGHES AIRCRAFT COMPANY
发明人
CURTIS DANIEL L.
分类号
G11B5/02
主分类号
G11B5/02
代理机构
代理人
主权项
地址
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