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发明名称
Magnetic sound recorder
摘要
申请公布号
US2645494(A)
申请公布日期
1953.07.14
申请号
US19490118153
申请日期
1949.09.27
申请人
MACHINE TOOL WORKS OERLIKON, ADMINISTRATION COMPANY
发明人
KELLER ERNST
分类号
G11B5/004
主分类号
G11B5/004
代理机构
代理人
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地址
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