TELEPHONE SYSTEM RING-TRIPPING ARRANGEMENT,申请号CAD689421-传众专利搜索

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发明名称	TELEPHONE SYSTEM RING-TRIPPING ARRANGEMENT
摘要
申请公布号	CA689421(A)	申请公布日期	1964.06.23
申请号	CAD689421	申请日期
申请人	ASSOCIATED ELECTRICAL INDUSTRIES LIMITED	发明人	JOHN B. CLARK
分类号		主分类号
代理机构		代理人
主权项
地址

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