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发明名称
摘要
申请公布号
JP2993487(B2)
申请公布日期
1999.12.20
申请号
JP19970329846
申请日期
1997.04.28
申请人
HITACHI SEISAKUSHO KK
发明人
TAKARAGI KAZUO;NAKAGAWA AKIO;SASAKI RYOICHI
分类号
G06K19/073;G09C1/00;H04L9/06;H04L9/32;(IPC1-7):G09C1/00
主分类号
G06K19/073
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