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发明名称
CODED TRACK CIRCUITS
摘要
申请公布号
CA490499(A)
申请公布日期
1953.02.10
申请号
CAD490499
申请日期
申请人
THE UNION SWITCH AND SIGNAL COMPANY
发明人
HERMAN G. BLOSSER
分类号
主分类号
代理机构
代理人
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地址
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