Lighting devices
US4931910A · kind A · utility
3Cited by
4References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 24, 1989 |
| Grant date | Jun 5, 1990 |
| Priority date | — |
| Expiry date | Feb 24, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/0001
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A lighting device comprises a cylindrical light carrier having a plurality of tubular self luminous light sources attached longitudinally along a surface and throughout a major arc of its circumference. In one embodiment the lighting device includes a parabolic reflector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.