IMPROVEMENTS IN OR RELATING TO SIMPLE SOUND REPRODUCING DEVICES,申请号HK19900000315-传众专利搜索

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发明名称	IMPROVEMENTS IN OR RELATING TO SIMPLE SOUND REPRODUCING DEVICES
摘要
申请公布号	HK31590(A)	申请公布日期	1990.05.04
申请号	HK19900000315	申请日期	1990.04.26
申请人	OZEN CORPORATION	发明人	EISHI KOIKE
分类号	G11B3/00;G11B3/78;G11B31/00;G11B33/06;(IPC1-7):G11B31/00;G11B3/095	主分类号	G11B3/00
代理机构		代理人
主权项
地址

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