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发明名称
Automatic train control system
摘要
申请公布号
US1889721(A)
申请公布日期
1932.11.29
申请号
US19160132972
申请日期
1916.11.23
申请人
SPRAGUE SAFETY CONTROL AND SIGNAL CORPORATION
发明人
WORK LEONARD
分类号
B61L3/12
主分类号
B61L3/12
代理机构
代理人
主权项
地址
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