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发明名称	KEY TELEPHONE SYSTEM
摘要
申请公布号	JPH0470155(A)	申请公布日期	1992.03.05
申请号	JP19900183253	申请日期	1990.07.10
申请人	NEC CORP	发明人	TOYOSHIMA FUMIYOSHI;ABE KUNIARI
分类号	H04M3/42;H04M3/533;H04Q3/58	主分类号	H04M3/42
代理机构		代理人
主权项
地址

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