ATTENDANCE DISPLAY SYSTEM,申请号JP19900296143-传众专利搜索

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发明名称	ATTENDANCE DISPLAY SYSTEM
摘要
申请公布号	JPH04168859(A)	申请公布日期	1992.06.17
申请号	JP19900296143	申请日期	1990.10.31
申请人	NEC ENG LTD	发明人	NISHIMURA KOJI
分类号	G08B5/00;H04M3/42;H04M11/08	主分类号	G08B5/00
代理机构		代理人
主权项
地址

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