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发明名称
APPARATUS FOR CONNECTING VISUAL TELEPHONE SETS IN A CONFERENCE ARRANGEMENT
摘要
申请公布号
CA850837(A)
申请公布日期
1970.09.01
申请号
CAD850837
申请日期
申请人
WESTERN ELECTRIC COMPANY, INCORPORATED
发明人
IRWIN DORROS;DUDLEY B. ROBINSON, JR.
分类号
主分类号
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