APPARATUS FOR CONTROLLING HIGHWAY CROSSING SIGNALS,申请号CAD531257-传众专利搜索

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发明名称	APPARATUS FOR CONTROLLING HIGHWAY CROSSING SIGNALS
摘要
申请公布号	CA531257(A)	申请公布日期	1956.10.02
申请号	CAD531257	申请日期
申请人	WESTINGHOUSE AIR BRAKE COMPANY	发明人	RALPH R. KEMMERER
分类号		主分类号
代理机构		代理人
主权项
地址

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