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The oil lamp is invented.
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The platinun filament is invented
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The vacuum tube lamp is invented.
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The arc lamp is invented.
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The eletric light bulb is invented.
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The mercury -vapor lamp is invented.
A list shows items. A timeline shows sequence.
Use Timetoast to make dates, milestones, and turning points easier to understand in a clear visual format. Timetoast is a timeline maker for work, school, research, and stories.