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发明名称
TANDEM SWITCH
摘要
申请公布号
JPH01264438(A)
申请公布日期
1989.10.20
申请号
JP19880093031
申请日期
1988.04.15
申请人
NEC CORP
发明人
SUGAWARA NOBUAKI
分类号
主分类号
代理机构
代理人
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