DIRECTION CONTROL DEVICE OF SPEAKER,申请号KR19870023172U-传众专利搜索

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发明名称	DIRECTION CONTROL DEVICE OF SPEAKER
摘要
申请公布号	KR900010573(Y1)	申请公布日期	1990.11.22
申请号	KR19870023172U	申请日期	1987.12.26
申请人	GOLD STAR CO., LTD.	发明人	HONG SUNG-CHUN
分类号	H04N5/64;(IPC1-7):H04N5/64	主分类号	H04N5/64
代理机构		代理人
主权项
地址

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