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经营范围
发明名称
CONFERENCE BRIDGE
摘要
申请公布号
GB8400857(D0)
申请公布日期
1984.02.15
申请号
GB19840000857
申请日期
1984.01.13
申请人
PLESSEY CO PLC
发明人
分类号
H04M3/56;(IPC1-7):H04M/
主分类号
H04M3/56
代理机构
代理人
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地址
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