Sound recording and reproducing apparatus,申请号GB19480020499-传众专利搜索

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发明名称	Sound recording and reproducing apparatus
摘要
申请公布号	GB670246(A)	申请公布日期	1952.04.16
申请号	GB19480020499	申请日期	1948.08.03
申请人	DICTAPHONE CORPORATION	发明人
分类号	B01D17/06;G11B5/00;G11B5/004;H02N13/00	主分类号	B01D17/06
代理机构		代理人
主权项
地址

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