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Bullet proof vests, fire escapes, windshield wipers and laser printers are invented by women.
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The electric chair was invented by a dentist.
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The cigarette lighter was invented before the match.
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In 1932. Engineer, Harry Jennings, built the first folding, tubular steel wheelchair. The chair was built for a paraplegic friend of Jennings called Herbert Everest. Together they founded Everest & Jennings, a company that monopolized the wheelchair market for many years.
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Otto Frederick Rohwedder is generally credited with inventing the first automatic bread slicer in 1928
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