Poster display device with longitudinal retention of frame sections
US4937959A · kind A · utility
21Cited by
22References
37Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 13, 1987 |
| Grant date | Jul 3, 1990 |
| Priority date | — |
| Expiry date | Mar 13, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09F1/12
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An improved poster frame and display holder for replaceable posters and similar advertising material is disclosed. The sides of the frame include sets of pivotably engaged extruded metal, molded plastic, or other front and back frame members. Improved leaf-type springs bias together the front and back members of each side of the frame for releasably holding a poster or similar display. Interlocking portions of the front and back members substantially prevent relative longitudinal movement therebetween.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.