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 When did Thomas Edison patent the first experimental electric typewriter?

Answer Thomas Alva Edison patented his design for the first experimental electric typewriter in 1872. However, Edison's design did not function as well as intended. The first working electric typewriter c... Read More »
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Top Q&A For: When did Thomas Edison patent the first experim...

Which invention did lady edison receive her first patent on?

Lady Edison is the nickname given to Beulah Louise Henry, born in 1887, who invented more than 100 products. Her first patent, when she was only 24 years old, was the ice freezer with a vacuum sea... Read More »
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How old was Thomas Edison when he invented the light bulb?

Thomas Alva Edison, an American scientist and inventor, began working to design an electric light bulb in the 1870s. The first successful test took place on October 22, 1879--32 years, 8 months and... Read More »
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When did thomas edison improve the light bulb?

While Thomas Edison didn't invent the light bulb, he did more than his share in improving the invention. From 1878 to 1880, Edison and his colleagues eventually created an incandescent light bulb t... Read More »
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When did Thomas Edison invent the movie projector?

Thomas Edison first patented the idea for the Kinetoscope in 1888, despite the fact he had not yet invented the device. Edison patented the actual device in 1891, and gave its first public demonstr... Read More »
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