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发明名称
TELEPHONE SYSTEM
摘要
申请公布号
JPH01200857(A)
申请公布日期
1989.08.14
申请号
JP19880025076
申请日期
1988.02.05
申请人
NEC CORP
发明人
NISHIYAMA KOHEI
分类号
H04M1/72;H04Q3/58
主分类号
H04M1/72
代理机构
代理人
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