Sign and sheet material useful therein
US5655324A · kind A · utility
2Cited by
5References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 13, 1994 |
| Grant date | Aug 12, 1997 |
| Priority date | — |
| Expiry date | Oct 13, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/456
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Signs which include a sheet including plastic stiff enough to resist fracture and flexible enough to maintain surface flatness in use without being put under tension, and such sheets.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.