Electric signal device for toy railways,申请号US19380227194-传众专利搜索

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发明名称	Electric signal device for toy railways
摘要
申请公布号	US2218074(A)	申请公布日期	1940.10.15
申请号	US19380227194	申请日期	1938.08.27
申请人	RUSSELL SMITH WILLIAM	发明人	SMITH WILLIAM RUSSELL
分类号	A63H19/34	主分类号	A63H19/34
代理机构		代理人
主权项
地址

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