Device for holding pages
US6059249A · kind A · utility
26Cited by
5References
4Claims
0Family size
Inventor
Key dates
| Filing date | Jun 2, 1998 |
| Grant date | May 9, 2000 |
| Priority date | — |
| Expiry date | Jun 2, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09F1/14
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system for holding pages comprising a plastic hollow housing partially filled with ballast and having a flat base, and a groove in the housing for holding pages. The groove has a center and outer regions and a horizontal cross section in a shallow "V" shape. The groove wall spacing is approximately constant throughout, and protrusions extending from the inner surface of a first lip near the center region of the groove and from the other wall of the groove near the outer regions of the groove create substantial friction and gripping ability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.