
Lewis Howard Latimer
Lewis Latimer’s many inventions included an evaporative air conditioner, an improved process for manufacturing carbon filaments for light bulbs, and an improved toilet system for railroad cars.

Lewis Latimer’s many inventions included an evaporative air conditioner, an improved process for manufacturing carbon filaments for light bulbs, and an improved toilet system for railroad cars.

In 1966, Brown invented a video home security system. Her idea, which has expanded beyond just security for homes, has influenced security systems in businesses around the world.

McCoy is most well-known for inventing an automatic lubricator for oiling the steam engines of locomotives and ships, which was patented in 1872 as “Improvement in Lubricators for Steam-Engines”. His
George Washington Carver was an American agricultural scientist and inventor who promoted alternative crops to cotton and methods to prevent soil depletion. He was one of the most prominent black