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发明名称
SPECIFIC SERVICE SYSTEM IN AUTOMATIC EXCHANGE
摘要
申请公布号
JPH02277362(A)
申请公布日期
1990.11.13
申请号
JP19890099508
申请日期
1989.04.18
申请人
NEC CORP
发明人
YAMATO OSAMU;SEKINISHI AKIRA
分类号
H04M3/42
主分类号
H04M3/42
代理机构
代理人
主权项
地址
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