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发明名称
PUSH-BUTTON TELEPHONE SYSTEM
摘要
申请公布号
JPH02137498(A)
申请公布日期
1990.05.25
申请号
JP19880291279
申请日期
1988.11.18
申请人
NEC CORP
发明人
TERAUCHI YOSHIO
分类号
H04Q3/58
主分类号
H04Q3/58
代理机构
代理人
主权项
地址
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