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发明名称
Electric signal system
摘要
申请公布号
US1967298(A)
申请公布日期
1934.07.24
申请号
US19270211348
申请日期
1927.08.08
申请人
THE WESTINGHOUSE AIR BRAKE COMPANY
发明人
FARMER CLYDE C.;THOMAS THOMAS H.
分类号
B61L15/00
主分类号
B61L15/00
代理机构
代理人
主权项
地址
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