Guthrie; Don W.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Guthrie; Don W..The latest application filed is for "programmable dichromatic legend lighted switches".
- Guthrie; Don W. - Colleyville TX
- Guthrie; Don W. - North Richland Hills TX
- Guthrie; Don W. - Bedford TX
| Patent | Date |
|---|---|
| Programmable dichromatic legend lighted switches Grant 7,453,218 - Guthrie November 18, 2 | 2008-11-18 |
| Programmable dichromatic legend lighted switches App 20050231946 - Guthrie, Don W. | 2005-10-20 |
| Enhanced trim resolution voltage-controlled dimming LED driver Grant 6,737,814 - Guthrie , et al. May 18, 2 | 2004-05-18 |
| Enhanced trim resolution voltage-controlled dimming LED driver Grant 6,670,776 - Guthrie , et al. December 30, 2 | 2003-12-30 |
| Voltage dimmable LED display producing multiple colors Grant 6,653,798 - Guthrie , et al. November 25, 2 | 2003-11-25 |
| Fault tolerant led display design Grant 6,650,064 - Guthrie , et al. November 18, 2 | 2003-11-18 |
| Power efficient LED driver quiescent current limiting circuit configuration App 20020047606 - Guthrie, Don W. ; et al. | 2002-04-25 |
| Fault tolerant led display design App 20020047596 - Guthrie, Don W. ; et al. | 2002-04-25 |
| Enhanced trim resolution voltage-controlled dimming LED driver App 20020047605 - Guthrie, Don W. ; et al. | 2002-04-25 |
| Enhanced trim resolution voltage-controlled dimming led driver App 20020047593 - Guthrie, Don W. ; et al. | 2002-04-25 |
| Sunlight readable illuminated indicia display devices Grant 4,535,396 - Guthrie August 13, 1 | 1985-08-13 |
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