Projection screen assembly
US6873458B1 · kind B1 · utility
29Cited by
6References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 28, 2004 |
| Grant date | Mar 29, 2005 |
| Priority date | — |
| Expiry date | Jul 28, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B21/58
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A projection screen includes a member that functions as a support for holding the screen upright when the screen is in an open-position and as a fastener for holding the screen shut when the screen is in a closed-position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.