Patent applications and USPTO patent grants for Larson; Daniel A..The latest application filed is for "high pressure electric discharge lamp employing a metal spiral with positive potential".
Patent | Date |
---|---|
High pressure electric discharge lamp employing a metal spiral with positive potential Grant 4,491,766 - Larson January 1, 1 | 1985-01-01 |
Starting arrangement for high-intensity-discharge sodium lamp Grant 4,437,039 - Larson March 13, 1 | 1984-03-13 |
High-intensity-discharge lamp of the mercury-metal halide type which efficiently illuminates objects with excellent color appearance Grant 4,360,758 - Thornton, Jr. , et al. November 23, 1 | 1982-11-23 |
Resistor-aided starting of metal halide lamps Grant 4,258,288 - Michael , et al. March 24, 1 | 1981-03-24 |
Starting arrangement for high pressure discharge sodium lamp Grant 4,191,910 - Larson March 4, 1 | 1980-03-04 |
High pressure sodium vapor lamp with voltage rise compensator Grant 4,182,976 - Larson January 8, 1 | 1980-01-08 |
Method Of Operating A High-pressure Gaseous Discharge Lamp With Improved Efficiency Grant 3,624,447 - Young , et al. November 30, 1 | 1971-11-30 |
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