Encodable retroreflective sheeting
US4085314A · kind A · utility
27Cited by
5References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 9, 1976 |
| Grant date | Apr 18, 1978 |
| Priority date | — |
| Expiry date | Feb 9, 1996 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K19/06009
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Sheet material useful to form a coded retroreflective mark comprises a retroreflective base sheet and a cover film adhered over the base sheet and precut to form a plurality of removable sections. The cut sections are arranged in a predetermined pattern such that removal of different sections to expose the retroreflective sheeting under the sections provides different codes that may be read and distinguished by photoscanning equipment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.