Signal valve device,申请号US19310570645-传众专利搜索

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发明名称	Signal valve device
摘要
申请公布号	US1910513(A)	申请公布日期	1933.05.23
申请号	US19310570645	申请日期	1931.10.23
申请人	THE WESTINGHOUSE AIR BRAKE COMPANY	发明人	YANCEY PERRY E.
分类号	G08B3/06	主分类号	G08B3/06
代理机构		代理人
主权项
地址

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