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发明名称
Car retarder control system
摘要
申请公布号
US2690238(A)
申请公布日期
1954.09.28
申请号
US19510212903
申请日期
1951.02.27
申请人
GENERAL RAILWAY SIGNAL COMPANY
发明人
BRIXNER FREDERICK W.
分类号
B61K7/12
主分类号
B61K7/12
代理机构
代理人
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地址
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