Time recording talking machine,申请号US19330657228-传众专利搜索

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发明名称	Time recording talking machine
摘要
申请公布号	US2034943(A)	申请公布日期	1936.03.24
申请号	US19330657228	申请日期	1933.02.17
申请人	DYER FRANK L	发明人	DYER FRANK L.
分类号	G09F25/00	主分类号	G09F25/00
代理机构		代理人
主权项
地址

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