Lampshade
US7373744B1 · kind B1 · utility
7Cited by
13References
20Claims
0Family size
Inventor
Key dates
| Filing date | Jun 15, 2004 |
| Grant date | May 20, 2008 |
| Priority date | — |
| Expiry date | May 21, 2025 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21V11/14
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A lampshade has a body with a number of spaced-apart apertures extending through the thickness of the body. The apertures are arranged in a pattern defining an image on the lampshade. Each aperture is sufficiently small in cross section to form an illuminated image pixel from normal viewing distances when the lampshade is illuminated by a lamp.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.