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发明名称
LINE BLOCKING SYSTEM
摘要
申请公布号
JPS6444664(A)
申请公布日期
1989.02.17
申请号
JP19870202198
申请日期
1987.08.12
申请人
NEC CORP
发明人
SHINOZAKI KUNIO
分类号
H04M3/22;H04Q3/545
主分类号
H04M3/22
代理机构
代理人
主权项
地址
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