Control means for dictation machines,申请号US19420436975-传众专利搜索

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发明名称	Control means for dictation machines
摘要
申请公布号	US2340606(A)	申请公布日期	1944.02.01
申请号	US19420436975	申请日期	1942.03.31
申请人	THE GRAY MANUFACTURING COMPANY	发明人	MANN HAYWARD K.
分类号	G11B15/02	主分类号	G11B15/02
代理机构		代理人
主权项
地址

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