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发明名称	DC CONTROL CIRCUIT
摘要
申请公布号	GB8728466(D0)	申请公布日期	1988.01.13
申请号	GB19870028466	申请日期	1987.12.04
申请人	MITEL CORP	发明人
分类号	H04M19/00;H04Q3/42	主分类号	H04M19/00
代理机构		代理人
主权项
地址

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