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Anton von Leeuenhoek invents the microscope
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William Seward Burroughts invents the adding machine
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Eli Whitney invents the cotton gin.
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Charles Goodyear invents vulcanized rubber.
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Samuel Morse invents the telegraph.
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Elisha Graves Otis invents the elevator break.
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Elijah McCoy invents the ironing board.
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Alexander Miles invents automatic elevator doors.
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Edwin Binney and Harold Smith invent Crayola Crayons.
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Whitcomb L. Judson invents the zipper1917
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John Logie Baird invents the television.
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Frank Henry Fleer invents bubble gum
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Richard Drew invents scotch tape.
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Madam C.J. Walker Invents African American Hair Care Products
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Jonas Salk invents a vaccine for polio.