Telephone off-hook indicator,申请号GB19990022357-传众专利搜索

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发明名称	Telephone off-hook indicator
摘要
申请公布号	GB2354668(A)	申请公布日期	2001.03.28
申请号	GB19990022357	申请日期	1999.09.22
申请人	COLIN * HEWITT	发明人	COLIN * HEWITT
分类号	H04M1/82;(IPC1-7):H04M1/00	主分类号	H04M1/82
代理机构		代理人
主权项
地址

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