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发明名称
Loop switching system
摘要
申请公布号
USRE32516(E1)
申请公布日期
1987.10.06
申请号
US06/750894
申请日期
1985.07.01
申请人
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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