The 10 forgotten inventions of the world 

10.One Wheel Motorcycle (1931)

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9. Radio hat (USA, 1931)

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8. Bulletproof Glass (New York, 1931 )

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7. Extensible Caravan (France, 1934)

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6. Piano For The Bedridden (UK, 1935)

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5. Electrically Heated Jacket (USA, 1932)

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4. Early GPS (1932)

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3. Folding Emergency Bridge (Netherlands, 1926)

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2. Faxed Newspaper (1938)

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1. Face Protection From Snowstorms (Canada, 1939)

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15 Rare Pennies of the Twentieth Century

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