发明名称 |
DATA WITH PERIMETER IDENTIFICATION TAG |
摘要 |
An identification or data tag composed of a central set of data cells surrounded by border cells which cooperate with their adjacent data cells by contrasting therewith to form a reference perimeter defined by the inter-sections of the boundaries of the border cells with their respective adjoining data cells.
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申请公布号 |
US5202552(A) |
申请公布日期 |
1993.04.13 |
申请号 |
US19910688400 |
申请日期 |
1991.04.22 |
申请人 |
MACMILLAN BLOEDEL LIMITED |
发明人 |
LITTLE, WARREN D.;BAKER, PETER J. M. |
分类号 |
G06K7/10;G06K19/06 |
主分类号 |
G06K7/10 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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