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经营范围
发明名称
LINE CONNECTION CONTROL SYSTEM
摘要
申请公布号
JPH02205132(A)
申请公布日期
1990.08.15
申请号
JP19890023868
申请日期
1989.02.03
申请人
HITACHI LTD
发明人
OOTA TOMOYOSHI
分类号
H04L12/02
主分类号
H04L12/02
代理机构
代理人
主权项
地址
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