CHANNEL FORMING CONFIRMATION CONTROL SYSTEM FOR SUBSCRIBER ARTIFICIAL CALL DEVICE,申请号JP19910016958-传众专利搜索

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发明名称	CHANNEL FORMING CONFIRMATION CONTROL SYSTEM FOR SUBSCRIBER ARTIFICIAL CALL DEVICE
摘要
申请公布号	JPH04236552(A)	申请公布日期	1992.08.25
申请号	JP19910016958	申请日期	1991.01.18
申请人	NEC CORP	发明人	IWAZAWA SATORU;WATANUKI KEIICHI;SAITO YUICHI;TSUKIOKA KAZUYA
分类号	H04M3/26	主分类号	H04M3/26
代理机构		代理人
主权项
地址

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