Hand-held message sign
US4876811A · kind A · utility
11Cited by
5References
19Claims
0Family size
Inventor
Key dates
| Filing date | Feb 19, 1988 |
| Grant date | Oct 31, 1989 |
| Priority date | — |
| Expiry date | Feb 19, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09F21/02
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An improved hand-held sign for sending visual messages aimed at specific persons. The apparatus has a substantially vertical planar member for posting of messages, such as by message cards, a pistol-grip member with a handle portion and a substantially horizontal extension portion, the horizontal portion attached at its distal end to the back of the planar member. A plurality of message cards are preferably kept against the planar member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.