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Calculator
Creator was William Seward Burrough -
Steam Engine
Creator was Oliver Evans -
Sewing Machine
Creator was Elias Howe -
Cotton Gin
Creator was Eli Whitney -
Clock
Creator was Eli Terry -
Loom
Creator was George Crompton -
Beehive
Creator was Lorenzo Lorraine Langstroth -
Telegraph
Creator was Samuel F. B. Morse -
Safety Pin
Creator was Walter Hunt -
Mason Jar
Creator was John Mason -
Barbed Wire
Creator was Joseph Glidden -
Escalator
Creator was Charles D. Seeberger
