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发明名称
Track rail contactor
摘要
申请公布号
US1877184(A)
申请公布日期
1932.09.13
申请号
US19320596005
申请日期
1932.03.01
申请人
THE UNION SWITCH & SIGNAL COMPANY
发明人
LIVINGSTON JOHN W.
分类号
B61L1/00
主分类号
B61L1/00
代理机构
代理人
主权项
地址
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