Folded fluorescent lamp and socket
US4298822A · kind A · utility
31Cited by
4References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 23, 1979 |
| Grant date | Nov 3, 1981 |
| Priority date | — |
| Expiry date | May 23, 1999 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J5/48
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A fluorescent lamp of the type comprising a U-shaped glass tube whose inside surface is coated with fluorescent materials and which is filled with mercury vapor and rare gas, two electrodes at the ends of the glass tube, and a cap or base which bridges between the ends of the glass tube. As compared with the incandescent lamps with the same wattages the luminous efficiency and lamp life are remarkably improved, and the fluorescent lamps may be made considerably compact in size.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.