Signaling and indicating apparatus,申请号US19300431938-传众专利搜索

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发明名称	Signaling and indicating apparatus
摘要
申请公布号	US1814465(A)	申请公布日期	1931.07.14
申请号	US19300431938	申请日期	1930.02.27
申请人	ANDRE BECQ	发明人	BECQ ANDRE
分类号	B61L1/02	主分类号	B61L1/02
代理机构		代理人
主权项
地址

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