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发明名称
SECURITY METHOD AGAINST FALSIFICATION OF AN ORIGINAL DOCUMENT BASED ENCRYPTATION THROUGH THE RELATIVE POSITION OF THE TEXT LETTERS
摘要
申请公布号
SE9103351(D0)
申请公布日期
1991.11.12
申请号
SE19910003351
申请日期
1991.11.12
申请人
CLAES TYREN
发明人
分类号
主分类号
代理机构
代理人
主权项
地址
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