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经营范围
发明名称
Electro-magnetic transducer
摘要
申请公布号
US2852618(A)
申请公布日期
1958.09.16
申请号
US19560575670
申请日期
1956.04.02
申请人
HUGHES AIRCRAFT COMPANY
发明人
HANSEN JAY M.
分类号
G11B5/187
主分类号
G11B5/187
代理机构
代理人
主权项
地址
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