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发明名称
SYSTEM FOR DETECTING IDLE INPUT LINE IN SPATIAL SWITCH
摘要
申请公布号
JPH05153640(A)
申请公布日期
1993.06.18
申请号
JP19910310828
申请日期
1991.11.26
申请人
NEC CORP;NEC ENG LTD
发明人
ISHITOBI KIMIHIRO;KATAYAMA TOSHIFUMI;SHIRATORI AKIHIRO
分类号
H04Q3/52;H04Q3/545
主分类号
H04Q3/52
代理机构
代理人
主权项
地址
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