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发明名称
Method and product for protecting the secrecy of messages written on a movable support article, in particular on a sheet of paper cardboard or plastic
摘要
申请公布号
EP1090774(A3)
申请公布日期
2002.04.03
申请号
EP20000200113
申请日期
2000.01.13
申请人
VENTURINI & C. S.P.A.
发明人
GROSSI, PAOLO
分类号
B41M3/00;B41M3/14;(IPC1-7):B41M3/14;B42D15/02
主分类号
B41M3/00
代理机构
代理人
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地址
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