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发明名称
VIDEO-CONFERENCING
摘要
申请公布号
GB8611990(D0)
申请公布日期
1986.06.25
申请号
GB19860011990
申请日期
1986.05.16
申请人
THORN EMI FERGUSON LTD
发明人
分类号
主分类号
代理机构
代理人
主权项
地址
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