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发明名称
PUSH-BUTTON TELEPHONE SYSTEM
摘要
申请公布号
JPS636994(A)
申请公布日期
1988.01.12
申请号
JP19860150182
申请日期
1986.06.26
申请人
NEC CORP
发明人
YAMASHITA HIDEO
分类号
H04M3/42;H04Q3/58
主分类号
H04M3/42
代理机构
代理人
主权项
地址
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