Powell; John P.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Powell; John P..The latest application filed is for "brightness level adjustment of a lighted display device".
- Powell; John P. - Spring TX
- Powell; John P. - North Sioux City SD
| Patent | Date |
|---|---|
| Brightness Level Adjustment Of A Lighted Display Device App 20120013583 - Powell; John P. ; et al. | 2012-01-19 |
| Display brightness control method and apparatus for conserving battery power Grant 6,731,274 - Powell May 4, 2 | 2004-05-04 |
| Display brightness control method and apparatus for conserving battery power App 20030193472 - Powell, John P. | 2003-10-16 |
| Display brightness control method and apparatus for conserving battery power Grant 6,618,042 - Powell September 9, 2 | 2003-09-09 |
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