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发明名称
Recording system
摘要
申请公布号
US2143376(A)
申请公布日期
1939.01.10
申请号
US19350000046
申请日期
1935.01.02
申请人
RADIO CORPORATION
发明人
HANSELL CLARENCE W.
分类号
G01D15/16;H04L21/04;H04N1/034
主分类号
G01D15/16
代理机构
代理人
主权项
地址
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