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经营范围
发明名称
Track shunting apparatus
摘要
申请公布号
US2089825(A)
申请公布日期
1937.08.10
申请号
US19330650300
申请日期
1933.01.05
申请人
THE UNION SWITCH & SIGNAL COMPANY
发明人
BUTLER CHARLES W.;O'HAGAN BERNARD E.
分类号
B61L1/18
主分类号
B61L1/18
代理机构
代理人
主权项
地址
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