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发明名称
Train control system
摘要
申请公布号
US1920197(A)
申请公布日期
1933.08.01
申请号
US19260139794
申请日期
1926.10.06
申请人
ASSOCIATED ELECTRIC LABORATORIES, INC.
发明人
HUDD ALFRED ERNEST
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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