High pressure sodium lamp having reduced internal diameter
US6683412B2 · kind B2 · utility
0Cited by
5References
7Claims
0Family size
Assignee
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Key dates
| Filing date | Oct 24, 2002 |
| Grant date | Jan 27, 2004 |
| Priority date | — |
| Expiry date | Oct 24, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J61/34
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.