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经营范围
发明名称
Railway traffic controlling apparatus
摘要
申请公布号
US2697778(A)
申请公布日期
1954.12.21
申请号
US19520285208
申请日期
1952.04.30
申请人
WESTINGHOUSE AIR BRAKE COMPANY
发明人
HURSH CHARLES M.
分类号
B61L23/12
主分类号
B61L23/12
代理机构
代理人
主权项
地址
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