Light control window covering
US5664613A · kind A · utility
79Cited by
12References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 3, 1996 |
| Grant date | Sep 9, 1997 |
| Priority date | — |
| Expiry date | Jun 3, 2016 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06B2009/2627
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A window covering has a sheet of light admitting material which forms a back sheet and a series of spaced apart, generally parallel strips attached at one edge to the back sheet and attached at an opposite edge to an adjacent strip. Each strip contains a light impeding portion and a light admitting portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.