Who is the only U.S. President to invent and patent something?

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Who is the only U.S. President to invent and patent something?



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1) What groovy item was invented by Englishman Edward Craven Walker in 1963?

2) The Manhattan Project was started by President Roosevelt in 1942 to ensure that the U.S. beat the Germans in developing a nuclear bomb. Whom did Roosevelt appoint as scientific head the Manhattan Project?

3) What invention is credited to the Russian born American inventor Vladimir Kosma Zworykin?

4) Who invented Bifocal Lens?

5) Who invented the first controllable flying AEROPLANE (AIRPLANE)?

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