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发明名称
RING TRIP DETECTION SYSTEM
摘要
申请公布号
EP0116291(A3)
申请公布日期
1986.08.20
申请号
EP19840100265
申请日期
1984.01.12
申请人
REDCOM LABORATORIES, INC.
发明人
LITTLEFIELD, BRUCE G.
分类号
H04M3/06;H04M19/02;(IPC1-7):H04Q3/00
主分类号
H04M3/06
代理机构
代理人
主权项
地址
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