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Tetra Pak The Propeller The Zipper
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Dynamite The Turbo Engine The Modern Telephone The Safety Match The Blow Torch
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The Modern Refridgerator The Colour Monitor The Computer Mouse The Battery-Powered Pacemaker The Ultrasound The Spherical Ball Bearing The Turbine-Powered Locomotive |
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The Adjustable Wrench
(aka monkey wrench or universal screw spanner)
The Cream Separator
Population Statistics
The Systematic Classification of Plants, Animals and Minerals
The Centigrade Thermometer
Fire
The Wheel
[Facts]
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