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27 janv. 1940 - 1931 : Electric razor 1932 : Radio telescope; parking meter; folding wheelchair 1933 : Electron microscope; angle-poise lamp 1934 : Cats eyes 1935 : Electric guitar 1936 : Sun tan lotion; electric blanket 1938 :Ballpoint pen; photocopying 1939 : Helicopters; cloud seeding to trigger rain

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ByLauryn S
24 sept. 2018
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Date:

27 janv. 1940
Maintenaint
~ Il y a 85 ans

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