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发明名称
METHOD FOR PROTECTING FILE
摘要
申请公布号
JPH0581095(A)
申请公布日期
1993.04.02
申请号
JP19910240736
申请日期
1991.09.20
申请人
NEC CORP
发明人
MAEKAWA NORIKO
分类号
G06F12/00
主分类号
G06F12/00
代理机构
代理人
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