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发明名称
RAILWAY CAR RETARDER
摘要
申请公布号
CA357948(A)
申请公布日期
1936.05.19
申请号
CAD357948
申请日期
申请人
THE GENERAL RAILWAY SIGNAL COMPANY
发明人
NED C. L. BROWN
分类号
主分类号
代理机构
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