Railway signaling system,申请号US19530355666-传众专利搜索

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发明名称	Railway signaling system
摘要
申请公布号	US2852664(A)	申请公布日期	1958.09.16
申请号	US19530355666	申请日期	1953.05.18
申请人	WESTINGHOUSE AIR BRAKE COMPANY	发明人	BLOSSER HERMAN G.
分类号	B61L23/16	主分类号	B61L23/16
代理机构		代理人
主权项
地址

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