Short pumping stem for flat display screens
US5519284A · kind A · utility
11Cited by
7References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 17, 1995 |
| Grant date | May 21, 1996 |
| Priority date | — |
| Expiry date | Feb 17, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J2329/00
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A short pumping stem for flat display screens, more particularly for microtip flat display screens, generally adaptable to flat display screens constituted by a vacuum chamber, includes, before closure, an exhaust tube whose lower portion is integral with the middle portion of an upper concave wall of a cylindric portion having a diameter larger than the diameter of the tube.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.