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发明名称
RAILWAY TRAFFIC CONTROLLING APPARATUS
摘要
申请公布号
CA355814(A)
申请公布日期
1936.02.04
申请号
CAD355814
申请日期
申请人
THE UNION SWITCH AND SIGNAL COMPANY
发明人
HERMAN G. BLOSSER
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主分类号
代理机构
代理人
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