PRIVATE BRANCH OF EXCHANGE SYSTEM,申请号JP19900161371-传众专利搜索

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发明名称	PRIVATE BRANCH OF EXCHANGE SYSTEM
摘要
申请公布号	JPH0453392(A)	申请公布日期	1992.02.20
申请号	JP19900161371	申请日期	1990.06.21
申请人	MIRAI BIRU KENKIYUU KAIHATSU KK	发明人	TADACHI KATSUO;SASAHARA YUJIRO
分类号	H04Q3/58	主分类号	H04Q3/58
代理机构		代理人
主权项
地址

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