Lowerable changeable message and maintenance sign
US5471774A · kind A · utility
6Cited by
6References
17Claims
0Family size
Inventors
Key dates
| Filing date | Mar 23, 1993 |
| Grant date | Dec 5, 1995 |
| Priority date | — |
| Expiry date | Mar 23, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09F15/0087
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A wind sail sign system for mounting to existing sign structural columns and a method of raising or lowering a wind sail sign over and around other signs comprising a winch assembly and guide elements. The wind sail sign of the instant invention is constructed of lightweight materials, quick-change frame assemblies and laminated panels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.