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发明名称
TELEPHONE SERVICE SYSTEM AND TELEPHONE EXCHANGE SYSTEM
摘要
申请公布号
JPH10294793(A)
申请公布日期
1998.11.04
申请号
JP19970100113
申请日期
1997.04.17
申请人
NEC CORP
发明人
SATO MOTONORI
分类号
H04M3/50;H04M1/00;H04M3/42;(IPC1-7):H04M3/42
主分类号
H04M3/50
代理机构
代理人
主权项
地址
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