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Patent applications and USPTO patent grants for Van Der Voort; Dick.The latest application filed is for "luminescent screen for low pressure mercury discharge lamp with specific emission range".
Patent | Date |
---|---|
Luminescent screen for low pressure mercury discharge lamp with specific emission range Grant 6,144,152 - Van Der Voort November 7, 2 | 2000-11-07 |
Low-pressure mercury discharge lamp with luminescent layer Grant 5,994,831 - Van der Voort , et al. November 30, 1 | 1999-11-30 |
Neon discharge lamp Grant 5,825,125 - Ligthart , et al. October 20, 1 | 1998-10-20 |
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