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发明名称
INTERCOM SYSTEM
摘要
申请公布号
EP1316232(B1)
申请公布日期
2005.05.11
申请号
EP20010963275
申请日期
2001.09.10
申请人
VITEC GROUP COMMUNICATIONS LIMITED
发明人
FARMER, STEVEN;BURNS, DANIEL
分类号
H04M1/725;H04M3/56;H04W8/18;H04W84/16;(IPC1-7):H04Q7/26
主分类号
H04M1/725
代理机构
代理人
主权项
地址
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