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摘要
申请公布号
JPH03290722(A)
申请公布日期
1991.12.20
申请号
JP19900091867
申请日期
1990.04.06
申请人
NEC CORP
发明人
TAKASHIMA SHIRO
分类号
G06F3/023;H03M11/14
主分类号
G06F3/023
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