Gyászol Egy mondat szabályos about discovery of electric bulb ketrec Kezelés Idegen
Thomas Edison didn't invent the light bulb—but here's what he did do
Farmers Branch Historical Park - Lewis Howard Latimer and Joseph V. Nichols patented the “Electric Lamp” on September 13, 1881. The “Electric Lamp” is just one of the inventions associated with the
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The Light bulb By: Allyson Carter. Changed society, history, and everyday life. replaced fire –torches, candles, and oil and gas lamps The light bulb. - ppt download
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