DIGITAL WATERMARKS AND METHODS FOR SECURITY DOCUMENTS,申请号KR1020017001267-传众专利搜索

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发明名称	DIGITAL WATERMARKS AND METHODS FOR SECURITY DOCUMENTS
摘要
申请公布号	KR20010071067(A)	申请公布日期	2001.07.28
申请号	KR1020017001267	申请日期	2001.01.30
申请人		发明人
分类号	G06K9/74	主分类号	G06K9/74
代理机构		代理人
主权项
地址

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