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发明名称
Interlocking control apparatus
摘要
申请公布号
US2247071(A)
申请公布日期
1941.06.24
申请号
US19340726957
申请日期
1934.05.22
申请人
THE UNION SWITCH & SIGNAL COMPANY
发明人
SPRAY LESTER E.
分类号
B61L19/06
主分类号
B61L19/06
代理机构
代理人
主权项
地址
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