Display sign
US4217714A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 1, 1979 |
| Grant date | Aug 19, 1980 |
| Priority date | — |
| Expiry date | Jun 1, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09F13/0413
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A display sign including a frame member extending around the perimeter of the sign and with the sides of the frame member parallel to a common axis, at least one face member having a copy area located in a plane substantially perpendicular to the common axis, the face member including flange portions angularly disposed to the copy area and with the flange portions extending in a direction toward one edge of the frame member, and a retainer member extending along the one edge of the frame member and including an opening for receiving the flange portions and with the opening substantially aligned with the sides of the frame member and the flange portions of the one face member for providing the copy area of the one face member substantially coextensive with the sides of the frame member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.