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发明名称
Magnetic wire telegraphophone system
摘要
申请公布号
US2425213(A)
申请公布日期
1947.08.05
申请号
US19450592101
申请日期
1945.05.05
申请人
PHILCO CORPORATION
发明人
SUNSTEIN DAVID E.
分类号
G11B5/00
主分类号
G11B5/00
代理机构
代理人
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