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发明名称
DIGITAL SIGNAL SWITCHING DEVICE
摘要
申请公布号
JPH01144798(A)
申请公布日期
1989.06.07
申请号
JP19870304177
申请日期
1987.11.30
申请人
NEC CORP
发明人
SENBA SHINJI;OGUSHI YOSHIO;KATAGIRI HIDEKI;KUMAGAI TAKEO
分类号
H04J3/00;H04Q3/52;H04Q11/04
主分类号
H04J3/00
代理机构
代理人
主权项
地址
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