SYSTEM FOR CONTROLLING CALL TONE OF MASTER-SLAVE TELEPHONE SET,申请号JP19890133610-传众专利搜索

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发明名称	SYSTEM FOR CONTROLLING CALL TONE OF MASTER-SLAVE TELEPHONE SET
摘要
申请公布号	JPH02312348(A)	申请公布日期	1990.12.27
申请号	JP19890133610	申请日期	1989.05.26
申请人	NEC ENG LTD	发明人	SANO YOSHIAKI
分类号	H04M1/00;H04M1/72	主分类号	H04M1/00
代理机构		代理人
主权项
地址

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