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• Contact List Found
• 1. +1.800.430.6670
• 2. +44 (0) 208 759 5544
• 3. 800-474-6836
• 4. 800-474-6836
• 5. 800.464.2222
• 6. 855-369-2718

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• Frequently Asked Questions

• Did Leonardo da Vinci invent contact lenses?

  Before technological advances made contact lenses possible, thinkers like Leonardo da Vinci and René Descartes experimented with water’s refractive power. In 1508, da Vinci speculated that vision could be altered when the eye was in direct contact with water.

• When did Farnsworth invent the first television?

  Farnsworth’s work convinced Zworykin that an electronic method of image scanning was possible, and on his return to RCA he set out to develop his version of the device, the ionoscope. Farnsworth achieved the first all electronic transmission of a television image in 1927, but was not able to patent the system until 1930.

• What did Henry Hollingsworth invent in 1944?

  Hollingsworth graduated from Greenville High School and spent one lackluster year as a student at Furman University. But following his father’s death in 1942, he and his mother inherited the business. In January 1944, Hollingsworth received his first patent for an invention that allowed textile machinery to better process synthetic fibers .

• Why did Eli Whitney invent the cotton gin?

  public domain. Inventor, mechanical engineer and manufacturing pioneer, Eli Whitney is best known as the inventor of the cotton gin, patented in 1794. An unforeseen byproduct of Whitney’s invention, a labor-saving device, was to help preserve the institution of slavery in the South by making cotton production highly profitable.

• What did John Haydon invent?

  Haydon also invented a printed circuit motor that used a printed circuit that comprised the entire winding and commutator in a single flat printed circuit disc. The motor field is a simple doughnut-shaped piece of ferrite material. This motor is covered by U.S. Patent No. RE25,305.