OPERATOR CALL TRANSFER AND OVERLAP CALL SWITCHING EQUIPMENT,申请号CAD898944-传众专利搜索

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发明名称	OPERATOR CALL TRANSFER AND OVERLAP CALL SWITCHING EQUIPMENT
摘要
申请公布号	CA898944(A)	申请公布日期	1972.04.25
申请号	CAD898944	申请日期
申请人	WESTERN ELECTRIC COMPANY, INCORPORATED	发明人	ROBERT M. MORRIS;JOHN M. REPHOLZ
分类号		主分类号
代理机构		代理人
主权项
地址

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