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经营范围
发明名称
Railway train operating and dispatching system
摘要
申请公布号
US2124452(A)
申请公布日期
1938.07.19
申请号
US19310541131
申请日期
1931.05.30
申请人
SHAVER ARCHIBALD G
发明人
SHAVER ARCHIBALD G.
分类号
B61L3/22
主分类号
B61L3/22
代理机构
代理人
主权项
地址
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