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发明名称
POLLING TYPE DATA COMMUNICATION SYSTEM
摘要
申请公布号
JPH0216836(A)
申请公布日期
1990.01.19
申请号
JP19880167427
申请日期
1988.07.04
申请人
NIPPON TELEGR & TELEPH CORP <NTT>
发明人
MAEKAWA EIJI;OGATA YOSHIFUMI
分类号
H04L12/40
主分类号
H04L12/40
代理机构
代理人
主权项
地址
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