TELEPHONE LINE TRANSFER CIRCUITS,申请号CAD836656-传众专利搜索

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发明名称	TELEPHONE LINE TRANSFER CIRCUITS
摘要
申请公布号	CA836656(A)	申请公布日期	1970.03.10
申请号	CAD836656	申请日期
申请人	THE BELL TELEPHONE COMPANY OF CANADA	发明人	DEREK LEYBURN
分类号		主分类号
代理机构		代理人
主权项
地址

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