Annunciator,申请号US19470768410-传众专利搜索

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发明名称	Annunciator
摘要
申请公布号	US2571973(A)	申请公布日期	1951.10.16
申请号	US19470768410	申请日期	1947.08.13
申请人	WESTINGHOUSE AIR BRAKE COMPANY	发明人	WALKER ALEC HERVEY BENNETT
分类号	H04M3/487	主分类号	H04M3/487
代理机构		代理人
主权项
地址

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