EAR SHELL REAR DIRECTION ACOUSTIC RADIATION TYPE HEADPHONE WITH FRONT OPEN CYLINDRICAL BUFFLE,申请号JP19890224377-传众专利搜索

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发明名称	EAR SHELL REAR DIRECTION ACOUSTIC RADIATION TYPE HEADPHONE WITH FRONT OPEN CYLINDRICAL BUFFLE
摘要
申请公布号	JPH0389699(A)	申请公布日期	1991.04.15
申请号	JP19890224377	申请日期	1989.09.01
申请人	KURAYA NOU	发明人	KURAYA NOU
分类号	H04R1/10	主分类号	H04R1/10
代理机构		代理人
主权项
地址

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