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When and who invented the Balloon?
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Who invented the Photography (on metal)?
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Which company is ahead in Laser innovations?
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Nineteenth Laws of Planetary Motion
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When and who invented the Barbed Wire?
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Which company is ahead in Clock (pendulum) innovations?
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Who invented the Parachute?
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Who invented the Maps?
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Which company is ahead in Gyro-Compass innovations?
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What year was Parachute invented and how?
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