Fraud-preventing device for coin-controlled machines,申请号US19300432844-传众专利搜索

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发明名称	Fraud-preventing device for coin-controlled machines
摘要
申请公布号	US1800090(A)	申请公布日期	1931.04.07
申请号	US19300432844	申请日期	1930.03.03
申请人	PUBLIC SERVICE RADIOS, INC.	发明人	MACKAY WILLIAM
分类号	G07F1/00	主分类号	G07F1/00
代理机构		代理人
主权项
地址

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