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发明名称	KEY TELEPHONE SET
摘要	PURPOSE:To ensure an effective telephone conversation between extensions by securing an easy call for other key telephone sets using an extension counter circuit.
申请公布号	JPS5324207(A)	申请公布日期	1978.03.06
申请号	JP19760099169	申请日期	1976.08.18
申请人	MATSUSHITA ELECTRIC IND CO LTD	发明人	YAMANAKA MINORU;KAMIMURA TETSUYA;IWAYA HIDEMITSU;SUZUKI AKIRA
分类号	H04Q3/58;H04M9/00	主分类号	H04Q3/58
代理机构		代理人
主权项
地址

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