Locomotive-whistle-operating mechanism,申请号US19260110580-传众专利搜索

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发明名称	Locomotive-whistle-operating mechanism
摘要
申请公布号	US1754046(A)	申请公布日期	1930.04.08
申请号	US19260110580	申请日期	1926.05.20
申请人	RAFFERTY CHARLES D	发明人	RAFFERTY CHARLES D.
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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