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发明名称
AUTOMATIC SELECTION SIGNAL SWITCHING SYSTEM
摘要
申请公布号
JPH0250553(A)
申请公布日期
1990.02.20
申请号
JP19880198805
申请日期
1988.08.11
申请人
NEC CORP
发明人
ABE TOSHIO
分类号
H04M1/26;H04M11/00
主分类号
H04M1/26
代理机构
代理人
主权项
地址
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