Poster display device
US4145828A · kind A · utility
47Cited by
4References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 11, 1977 |
| Grant date | Mar 27, 1979 |
| Priority date | — |
| Expiry date | Oct 11, 1997 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09F15/0018
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An improved poster frame and display holder for replaceable posters and similar advertising material. The sides of the frame comprise sets of pivotably engaged extruded metal parts. Improved leaf-type spring mechanisms bias together the portions of each side of the frame for releasably holding a poster or similar display.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.