Collapsible educational chart
US6890183B2 · kind B2 · utility
5Cited by
16References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 24, 2002 |
| Grant date | May 10, 2005 |
| Priority date | — |
| Expiry date | Dec 24, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S40/904
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
Disclosed herein is a collapsible, educational chart that also serves as a promotional item.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.