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发明名称	ISDN COMMUNICATION EQUIPMENT
摘要
申请公布号	JPH0481153(A)	申请公布日期	1992.03.13
申请号	JP19900195524	申请日期	1990.07.24
申请人	RICOH CO LTD	发明人	WATABE SATOSHI
分类号	H04L29/06	主分类号	H04L29/06
代理机构		代理人
主权项
地址

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