Sign apparatus
US6321474A · kind A · utility
1Cited by
7References
8Claims
0Family size
Inventor
Key dates
| Filing date | May 20, 1999 |
| Grant date | Nov 27, 2001 |
| Priority date | — |
| Expiry date | May 20, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09F11/30
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A signage apparatus has a storage magazine of cartridges which may be individually displayed as desired.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.