AUTOMATIC TELEPHONE SYSTEM,申请号CAD456451-传众专利搜索

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发明名称	AUTOMATIC TELEPHONE SYSTEM
摘要
申请公布号	CA456451(A)	申请公布日期	1949.05.03
申请号	CAD456451	申请日期
申请人	SIEMENS BROTHERS AND CO. LIMITED	发明人	DAVID ADAM CHRISTIAN;BERNARD ANTHONY HENSLER
分类号		主分类号
代理机构		代理人
主权项
地址

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