EXCHANGE MODULE STANDBY CHANGEOVER SYSTEM,申请号JP19920044501-传众专利搜索

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发明名称	EXCHANGE MODULE STANDBY CHANGEOVER SYSTEM
摘要
申请公布号	JPH05244262(A)	申请公布日期	1993.09.21
申请号	JP19920044501	申请日期	1992.03.02
申请人	NIPPON TELEGR & TELEPH CORP <NTT>	发明人	ONISHI KOICHI;YASUDA SHINJI;SHINOZAKI KIMINORI
分类号	H04M3/22;H04Q11/04;(IPC1-7):H04M3/22	主分类号	H04M3/22
代理机构		代理人
主权项
地址

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