Celebrating Black Inventors Puzzle

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Across
  1. 2. Pioneering chemist who contributed to the development of synthetic drugs for treating glaucoma.
  2. 4. Innovator behind the development of the carbon filament for the electric light bulb.
  3. 5. Inventor of the automatic shoe-lasting machine.
  4. 7. Patented an improved bicycle frame design.
  5. 8. Invented a device to help disabled veterans feed themselves
Down
  1. 1. Invented the first practical and efficient refrigeration system, transforming the food industry
  2. 3. Developed the Super Soaker, a popular water gun that revolutionized water warfare
  3. 6. Created the three-position traffic signal.