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Oliver Evans invented the steam engine
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Samuel Morse invented the telegraph
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Elias Howe invented the sewing machine
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Walter Hunt invented the safety pin
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George Crompton invented the loom
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Helen Blanchard invented the zig zag sewing machine
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Andrew Hallidie invented the cable car
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Joseph Glidden invented barbed wire
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Alexander Graham Bell invented the telephone
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Charles Martin Hall invented aluminum
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George Eastman invented the first kodak camera
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Guglielmo Marconi developed the radio
