ACOUSTIC COUPLER DEVICE,申请号JP19890336712-传众专利搜索

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发明名称	ACOUSTIC COUPLER DEVICE
摘要
申请公布号	JPH03232356(A)	申请公布日期	1991.10.16
申请号	JP19890336712	申请日期	1989.12.27
申请人	RICOH DENSHI CO LTD	发明人	KURITA SHINJI
分类号	H04M1/21;H04M11/00	主分类号	H04M1/21
代理机构		代理人
主权项
地址

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