发明名称 |
Multiple structure cube corner article |
摘要 |
A retroreflective cube corner article which is a replica of a directly machined substrate comprises a plurality of single cube corner elements which are machined in the substrate. Each cube corner element is bounded by at least one groove from each of three sets of parallel grooves in the substrate so that the article comprises a plurality of different geometric structures.
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申请公布号 |
US5914813(A) |
申请公布日期 |
1999.06.22 |
申请号 |
US19970969241 |
申请日期 |
1997.11.13 |
申请人 |
3M INNOVATIVE PROPERTIES COMPANY |
发明人 |
SMITH, KENNETH L.;BENSON, GERALD M. |
分类号 |
B32B3/30;G02B5/124;(IPC1-7):G02B5/122 |
主分类号 |
B32B3/30 |
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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